Home / 78,488.29-117,732.54-36,345.41

Finding the Fourth Proportional to 78,488.29, 117,732.54 and 36,345.41

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Solution

The fourth proportional to 78,488.29, 117,732.54 and 36,345.41 is: 54,518.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,488.29 : 117,732.54 = 36,345.41 : x
  2. Step 2: Convert to fraction form
    78,488.29/117,732.54 = 36,345.41/x
  3. Step 3: Cross multiply
    78,488.29x = 117,732.54 × 36,345.41
  4. Step 4: Simplify right side
    78,488.29x = 4,279,036,847.98
  5. Step 5: Solve for x
    x = 4,279,036,847.98/78,488.29
  6. Step 6: Final answer
    x = 54,518.16

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.