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Finding the Fourth Proportional to 85,598.73, 128,412.45 and 29,436.57

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Solution

The fourth proportional to 85,598.73, 128,412.45 and 29,436.57 is: 44,159.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,598.73 : 128,412.45 = 29,436.57 : x
  2. Step 2: Convert to fraction form
    85,598.73/128,412.45 = 29,436.57/x
  3. Step 3: Cross multiply
    85,598.73x = 128,412.45 × 29,436.57
  4. Step 4: Simplify right side
    85,598.73x = 3,780,022,073.30
  5. Step 5: Solve for x
    x = 3,780,022,073.30/85,598.73
  6. Step 6: Final answer
    x = 44,159.79

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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.