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Finding the Fourth Proportional to 66,715.76, 91,961.88 and 52,546.16

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Solution

The fourth proportional to 66,715.76, 91,961.88 and 52,546.16 is: 72,430.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,715.76 : 91,961.88 = 52,546.16 : x
  2. Step 2: Convert to fraction form
    66,715.76/91,961.88 = 52,546.16/x
  3. Step 3: Cross multiply
    66,715.76x = 91,961.88 × 52,546.16
  4. Step 4: Simplify right side
    66,715.76x = 4,832,243,660.38
  5. Step 5: Solve for x
    x = 4,832,243,660.38/66,715.76
  6. Step 6: Final answer
    x = 72,430.32

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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.