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Finding the Fourth Proportional to 99,476.88, 137,264.04 and 57,037.20

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Solution

The fourth proportional to 99,476.88, 137,264.04 and 57,037.20 is: 78,703.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,476.88 : 137,264.04 = 57,037.20 : x
  2. Step 2: Convert to fraction form
    99,476.88/137,264.04 = 57,037.20/x
  3. Step 3: Cross multiply
    99,476.88x = 137,264.04 × 57,037.20
  4. Step 4: Simplify right side
    99,476.88x = 7,829,156,502.29
  5. Step 5: Solve for x
    x = 7,829,156,502.29/99,476.88
  6. Step 6: Final answer
    x = 78,703.28

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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.