Home / 30,730,856,822.48-42,395,596,468.80-20,572,857,435.76

Finding the Fourth Proportional to 30,730,856,822.48, 42,395,596,468.80 and 20,572,857,435.76

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Solution

The fourth proportional to 30,730,856,822.48, 42,395,596,468.80 and 20,572,857,435.76 is: 28,381,849,783.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,730,856,822.48 : 42,395,596,468.80 = 20,572,857,435.76 : x
  2. Step 2: Convert to fraction form
    30,730,856,822.48/42,395,596,468.80 = 20,572,857,435.76/x
  3. Step 3: Cross multiply
    30,730,856,822.48x = 42,395,596,468.80 × 20,572,857,435.76
  4. Step 4: Simplify right side
    30,730,856,822.48x = 872,198,562,056,632,532,992
  5. Step 5: Solve for x
    x = 872,198,562,056,632,532,992/30,730,856,822.48
  6. Step 6: Final answer
    x = 28,381,849,783.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.