Home / 83,695.04-115,519.24-47,905.80

Finding the Fourth Proportional to 83,695.04, 115,519.24 and 47,905.80

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Solution

The fourth proportional to 83,695.04, 115,519.24 and 47,905.80 is: 66,121.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,695.04 : 115,519.24 = 47,905.80 : x
  2. Step 2: Convert to fraction form
    83,695.04/115,519.24 = 47,905.80/x
  3. Step 3: Cross multiply
    83,695.04x = 115,519.24 × 47,905.80
  4. Step 4: Simplify right side
    83,695.04x = 5,534,041,607.59
  5. Step 5: Solve for x
    x = 5,534,041,607.59/83,695.04
  6. Step 6: Final answer
    x = 66,121.50

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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.