Home / 83,485.13-115,209.50-45,761.81

Finding the Fourth Proportional to 83,485.13, 115,209.50 and 45,761.81

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Solution

The fourth proportional to 83,485.13, 115,209.50 and 45,761.81 is: 63,151.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,485.13 : 115,209.50 = 45,761.81 : x
  2. Step 2: Convert to fraction form
    83,485.13/115,209.50 = 45,761.81/x
  3. Step 3: Cross multiply
    83,485.13x = 115,209.50 × 45,761.81
  4. Step 4: Simplify right side
    83,485.13x = 5,272,194,444.34
  5. Step 5: Solve for x
    x = 5,272,194,444.34/83,485.13
  6. Step 6: Final answer
    x = 63,151.30

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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.