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Finding the Fourth Proportional to 81,159.98, 112,001.33 and 45,351.50

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Solution

The fourth proportional to 81,159.98, 112,001.33 and 45,351.50 is: 62,585.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,159.98 : 112,001.33 = 45,351.50 : x
  2. Step 2: Convert to fraction form
    81,159.98/112,001.33 = 45,351.50/x
  3. Step 3: Cross multiply
    81,159.98x = 112,001.33 × 45,351.50
  4. Step 4: Simplify right side
    81,159.98x = 5,079,428,090.74
  5. Step 5: Solve for x
    x = 5,079,428,090.74/81,159.98
  6. Step 6: Final answer
    x = 62,585.38

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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.