Home / 81,454.22-112,409.85-45,642.90

Finding the Fourth Proportional to 81,454.22, 112,409.85 and 45,642.90

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Solution

The fourth proportional to 81,454.22, 112,409.85 and 45,642.90 is: 62,988.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,454.22 : 112,409.85 = 45,642.90 : x
  2. Step 2: Convert to fraction form
    81,454.22/112,409.85 = 45,642.90/x
  3. Step 3: Cross multiply
    81,454.22x = 112,409.85 × 45,642.90
  4. Step 4: Simplify right side
    81,454.22x = 5,130,711,542.57
  5. Step 5: Solve for x
    x = 5,130,711,542.57/81,454.22
  6. Step 6: Final answer
    x = 62,988.90

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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.