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Finding the Fourth Proportional to 66,248.64, 99,410.04 and 51,487.20

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Solution

The fourth proportional to 66,248.64, 99,410.04 and 51,487.20 is: 77,259.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,248.64 : 99,410.04 = 51,487.20 : x
  2. Step 2: Convert to fraction form
    66,248.64/99,410.04 = 51,487.20/x
  3. Step 3: Cross multiply
    66,248.64x = 99,410.04 × 51,487.20
  4. Step 4: Simplify right side
    66,248.64x = 5,118,344,611.49
  5. Step 5: Solve for x
    x = 5,118,344,611.49/66,248.64
  6. Step 6: Final answer
    x = 77,259.62

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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.