Home / 65,707,835.28-90,688,195.02-39,602,387.18

Finding the Fourth Proportional to 65,707,835.28, 90,688,195.02 and 39,602,387.18

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Solution

The fourth proportional to 65,707,835.28, 90,688,195.02 and 39,602,387.18 is: 54,658,154.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,707,835.28 : 90,688,195.02 = 39,602,387.18 : x
  2. Step 2: Convert to fraction form
    65,707,835.28/90,688,195.02 = 39,602,387.18/x
  3. Step 3: Cross multiply
    65,707,835.28x = 90,688,195.02 × 39,602,387.18
  4. Step 4: Simplify right side
    65,707,835.28x = 3,591,469,011,837,387.50
  5. Step 5: Solve for x
    x = 3,591,469,011,837,387.50/65,707,835.28
  6. Step 6: Final answer
    x = 54,658,154.49

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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.