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Finding the Fourth Proportional to 81,370.32, 112,284.60 and 45,552

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Solution

The fourth proportional to 81,370.32, 112,284.60 and 45,552 is: 62,858.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,370.32 : 112,284.60 = 45,552 : x
  2. Step 2: Convert to fraction form
    81,370.32/112,284.60 = 45,552/x
  3. Step 3: Cross multiply
    81,370.32x = 112,284.60 × 45,552
  4. Step 4: Simplify right side
    81,370.32x = 5,114,788,099.20
  5. Step 5: Solve for x
    x = 5,114,788,099.20/81,370.32
  6. Step 6: Final answer
    x = 62,858.15

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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.