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Finding the Fourth Proportional to 66,124.64, 91,248.72 and 37,439.84

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Solution

The fourth proportional to 66,124.64, 91,248.72 and 37,439.84 is: 51,665.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,124.64 : 91,248.72 = 37,439.84 : x
  2. Step 2: Convert to fraction form
    66,124.64/91,248.72 = 37,439.84/x
  3. Step 3: Cross multiply
    66,124.64x = 91,248.72 × 37,439.84
  4. Step 4: Simplify right side
    66,124.64x = 3,416,337,477.00
  5. Step 5: Solve for x
    x = 3,416,337,477.00/66,124.64
  6. Step 6: Final answer
    x = 51,665.12

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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.