Home / 72,817,772.88-100,488,220.04-40,222,725.20

Finding the Fourth Proportional to 72,817,772.88, 100,488,220.04 and 40,222,725.20

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Solution

The fourth proportional to 72,817,772.88, 100,488,220.04 and 40,222,725.20 is: 55,507,191.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,817,772.88 : 100,488,220.04 = 40,222,725.20 : x
  2. Step 2: Convert to fraction form
    72,817,772.88/100,488,220.04 = 40,222,725.20/x
  3. Step 3: Cross multiply
    72,817,772.88x = 100,488,220.04 × 40,222,725.20
  4. Step 4: Simplify right side
    72,817,772.88x = 4,041,910,060,506,053.50
  5. Step 5: Solve for x
    x = 4,041,910,060,506,053.50/72,817,772.88
  6. Step 6: Final answer
    x = 55,507,191.45

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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.