Home / 78,680.04-117,864.54-37,156.20

Finding the Fourth Proportional to 78,680.04, 117,864.54 and 37,156.20

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Solution

The fourth proportional to 78,680.04, 117,864.54 and 37,156.20 is: 55,660.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,680.04 : 117,864.54 = 37,156.20 : x
  2. Step 2: Convert to fraction form
    78,680.04/117,864.54 = 37,156.20/x
  3. Step 3: Cross multiply
    78,680.04x = 117,864.54 × 37,156.20
  4. Step 4: Simplify right side
    78,680.04x = 4,379,398,421.15
  5. Step 5: Solve for x
    x = 4,379,398,421.15/78,680.04
  6. Step 6: Final answer
    x = 55,660.86

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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.