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Finding the Fourth Proportional to 56,129.60, 77,486.88 and 34,915.76

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Solution

The fourth proportional to 56,129.60, 77,486.88 and 34,915.76 is: 48,201.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,129.60 : 77,486.88 = 34,915.76 : x
  2. Step 2: Convert to fraction form
    56,129.60/77,486.88 = 34,915.76/x
  3. Step 3: Cross multiply
    56,129.60x = 77,486.88 × 34,915.76
  4. Step 4: Simplify right side
    56,129.60x = 2,705,513,305.23
  5. Step 5: Solve for x
    x = 2,705,513,305.23/56,129.60
  6. Step 6: Final answer
    x = 48,201.19

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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.