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Finding the Fourth Proportional to 70,583.78, 105,766.32 and 55,755.92

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Solution

The fourth proportional to 70,583.78, 105,766.32 and 55,755.92 is: 83,547.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,583.78 : 105,766.32 = 55,755.92 : x
  2. Step 2: Convert to fraction form
    70,583.78/105,766.32 = 55,755.92/x
  3. Step 3: Cross multiply
    70,583.78x = 105,766.32 × 55,755.92
  4. Step 4: Simplify right side
    70,583.78x = 5,897,098,476.61
  5. Step 5: Solve for x
    x = 5,897,098,476.61/70,583.78
  6. Step 6: Final answer
    x = 83,547.50

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1.5x scale

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.