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Finding the Fourth Proportional to 65,411.62, 90,265.53 and 37,115.62

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Solution

The fourth proportional to 65,411.62, 90,265.53 and 37,115.62 is: 51,218.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,411.62 : 90,265.53 = 37,115.62 : x
  2. Step 2: Convert to fraction form
    65,411.62/90,265.53 = 37,115.62/x
  3. Step 3: Cross multiply
    65,411.62x = 90,265.53 × 37,115.62
  4. Step 4: Simplify right side
    65,411.62x = 3,350,261,110.58
  5. Step 5: Solve for x
    x = 3,350,261,110.58/65,411.62
  6. Step 6: Final answer
    x = 51,218.13

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1.5x scale

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.