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Finding the Fourth Proportional to 85,343.68, 128,082.48 and 59,232.16

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Solution

The fourth proportional to 85,343.68, 128,082.48 and 59,232.16 is: 88,894.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,343.68 : 128,082.48 = 59,232.16 : x
  2. Step 2: Convert to fraction form
    85,343.68/128,082.48 = 59,232.16/x
  3. Step 3: Cross multiply
    85,343.68x = 128,082.48 × 59,232.16
  4. Step 4: Simplify right side
    85,343.68x = 7,586,601,948.56
  5. Step 5: Solve for x
    x = 7,586,601,948.56/85,343.68
  6. Step 6: Final answer
    x = 88,894.71

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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.