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Finding the Fourth Proportional to 81,159.71, 111,998.23 and 45,350.01

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Solution

The fourth proportional to 81,159.71, 111,998.23 and 45,350.01 is: 62,581.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,159.71 : 111,998.23 = 45,350.01 : x
  2. Step 2: Convert to fraction form
    81,159.71/111,998.23 = 45,350.01/x
  3. Step 3: Cross multiply
    81,159.71x = 111,998.23 × 45,350.01
  4. Step 4: Simplify right side
    81,159.71x = 5,079,120,737.11
  5. Step 5: Solve for x
    x = 5,079,120,737.11/81,159.71
  6. Step 6: Final answer
    x = 62,581.80

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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.