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Finding the Fourth Proportional to 65,070.38, 89,813.54 and 36,792.47

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Solution

The fourth proportional to 65,070.38, 89,813.54 and 36,792.47 is: 50,782.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,070.38 : 89,813.54 = 36,792.47 : x
  2. Step 2: Convert to fraction form
    65,070.38/89,813.54 = 36,792.47/x
  3. Step 3: Cross multiply
    65,070.38x = 89,813.54 × 36,792.47
  4. Step 4: Simplify right side
    65,070.38x = 3,304,461,618.96
  5. Step 5: Solve for x
    x = 3,304,461,618.96/65,070.38
  6. Step 6: Final answer
    x = 50,782.89

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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.