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Finding the Fourth Proportional to 81,351.47, 112,264.18 and 45,541.78

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Solution

The fourth proportional to 81,351.47, 112,264.18 and 45,541.78 is: 62,847.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,351.47 : 112,264.18 = 45,541.78 : x
  2. Step 2: Convert to fraction form
    81,351.47/112,264.18 = 45,541.78/x
  3. Step 3: Cross multiply
    81,351.47x = 112,264.18 × 45,541.78
  4. Step 4: Simplify right side
    81,351.47x = 5,112,709,798.41
  5. Step 5: Solve for x
    x = 5,112,709,798.41/81,351.47
  6. Step 6: Final answer
    x = 62,847.17

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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.