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Finding the Fourth Proportional to 65,426.80, 98,140.20 and 60,615.40

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Solution

The fourth proportional to 65,426.80, 98,140.20 and 60,615.40 is: 90,923.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,426.80 : 98,140.20 = 60,615.40 : x
  2. Step 2: Convert to fraction form
    65,426.80/98,140.20 = 60,615.40/x
  3. Step 3: Cross multiply
    65,426.80x = 98,140.20 × 60,615.40
  4. Step 4: Simplify right side
    65,426.80x = 5,948,807,479.08
  5. Step 5: Solve for x
    x = 5,948,807,479.08/65,426.80
  6. Step 6: Final answer
    x = 90,923.10

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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.