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Finding the Fourth Proportional to 88,389.96, 132,479.43 and 61,590.78

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Solution

The fourth proportional to 88,389.96, 132,479.43 and 61,590.78 is: 92,312.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,389.96 : 132,479.43 = 61,590.78 : x
  2. Step 2: Convert to fraction form
    88,389.96/132,479.43 = 61,590.78/x
  3. Step 3: Cross multiply
    88,389.96x = 132,479.43 × 61,590.78
  4. Step 4: Simplify right side
    88,389.96x = 8,159,511,427.66
  5. Step 5: Solve for x
    x = 8,159,511,427.66/88,389.96
  6. Step 6: Final answer
    x = 92,312.65

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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.