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Finding the Fourth Proportional to 64,152,811.20, 96,229,216.80 and 18,708,700.80

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Solution

The fourth proportional to 64,152,811.20, 96,229,216.80 and 18,708,700.80 is: 28,063,051.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,152,811.20 : 96,229,216.80 = 18,708,700.80 : x
  2. Step 2: Convert to fraction form
    64,152,811.20/96,229,216.80 = 18,708,700.80/x
  3. Step 3: Cross multiply
    64,152,811.20x = 96,229,216.80 × 18,708,700.80
  4. Step 4: Simplify right side
    64,152,811.20x = 1,800,323,625,329,533.50
  5. Step 5: Solve for x
    x = 1,800,323,625,329,533.50/64,152,811.20
  6. Step 6: Final answer
    x = 28,063,051.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.