Home / 65,981,337.20-98,972,005.80-57,478,281.20

Finding the Fourth Proportional to 65,981,337.20, 98,972,005.80 and 57,478,281.20

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Solution

The fourth proportional to 65,981,337.20, 98,972,005.80 and 57,478,281.20 is: 86,217,421.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,981,337.20 : 98,972,005.80 = 57,478,281.20 : x
  2. Step 2: Convert to fraction form
    65,981,337.20/98,972,005.80 = 57,478,281.20/x
  3. Step 3: Cross multiply
    65,981,337.20x = 98,972,005.80 × 57,478,281.20
  4. Step 4: Simplify right side
    65,981,337.20x = 5,688,740,780,300,431
  5. Step 5: Solve for x
    x = 5,688,740,780,300,431/65,981,337.20
  6. Step 6: Final answer
    x = 86,217,421.80

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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.