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Finding the Fourth Proportional to 81,468.08, 112,424.96 and 45,658

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Solution

The fourth proportional to 81,468.08, 112,424.96 and 45,658 is: 63,007.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,468.08 : 112,424.96 = 45,658 : x
  2. Step 2: Convert to fraction form
    81,468.08/112,424.96 = 45,658/x
  3. Step 3: Cross multiply
    81,468.08x = 112,424.96 × 45,658
  4. Step 4: Simplify right side
    81,468.08x = 5,133,098,823.68
  5. Step 5: Solve for x
    x = 5,133,098,823.68/81,468.08
  6. Step 6: Final answer
    x = 63,007.48

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1.5x scale

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.