Home / 83,785.40-115,623.05-62,370.91

Finding the Fourth Proportional to 83,785.40, 115,623.05 and 62,370.91

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Solution

The fourth proportional to 83,785.40, 115,623.05 and 62,370.91 is: 86,071.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,785.40 : 115,623.05 = 62,370.91 : x
  2. Step 2: Convert to fraction form
    83,785.40/115,623.05 = 62,370.91/x
  3. Step 3: Cross multiply
    83,785.40x = 115,623.05 × 62,370.91
  4. Step 4: Simplify right side
    83,785.40x = 7,211,514,678.15
  5. Step 5: Solve for x
    x = 7,211,514,678.15/83,785.40
  6. Step 6: Final answer
    x = 86,071.25

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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.