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Finding the Fourth Proportional to 63,984, 88,437.76 and 56,372.16

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Solution

The fourth proportional to 63,984, 88,437.76 and 56,372.16 is: 77,916.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,984 : 88,437.76 = 56,372.16 : x
  2. Step 2: Convert to fraction form
    63,984/88,437.76 = 56,372.16/x
  3. Step 3: Cross multiply
    63,984x = 88,437.76 × 56,372.16
  4. Step 4: Simplify right side
    63,984x = 4,985,427,556.76
  5. Step 5: Solve for x
    x = 4,985,427,556.76/63,984
  6. Step 6: Final answer
    x = 77,916.78

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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.