Home / 83,320.56-115,036.02-74,352.64

Finding the Fourth Proportional to 83,320.56, 115,036.02 and 74,352.64

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Solution

The fourth proportional to 83,320.56, 115,036.02 and 74,352.64 is: 102,654.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,320.56 : 115,036.02 = 74,352.64 : x
  2. Step 2: Convert to fraction form
    83,320.56/115,036.02 = 74,352.64/x
  3. Step 3: Cross multiply
    83,320.56x = 115,036.02 × 74,352.64
  4. Step 4: Simplify right side
    83,320.56x = 8,553,231,782.09
  5. Step 5: Solve for x
    x = 8,553,231,782.09/83,320.56
  6. Step 6: Final answer
    x = 102,654.52

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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.