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Finding the Fourth Proportional to 72,286.32, 108,643.32 and 59,885.76

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Solution

The fourth proportional to 72,286.32, 108,643.32 and 59,885.76 is: 90,005.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,286.32 : 108,643.32 = 59,885.76 : x
  2. Step 2: Convert to fraction form
    72,286.32/108,643.32 = 59,885.76/x
  3. Step 3: Cross multiply
    72,286.32x = 108,643.32 × 59,885.76
  4. Step 4: Simplify right side
    72,286.32x = 6,506,187,787.12
  5. Step 5: Solve for x
    x = 6,506,187,787.12/72,286.32
  6. Step 6: Final answer
    x = 90,005.80

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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.