Home / 78,001.90-117,002.85-76,446.70

Finding the Fourth Proportional to 78,001.90, 117,002.85 and 76,446.70

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Solution

The fourth proportional to 78,001.90, 117,002.85 and 76,446.70 is: 114,670.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,001.90 : 117,002.85 = 76,446.70 : x
  2. Step 2: Convert to fraction form
    78,001.90/117,002.85 = 76,446.70/x
  3. Step 3: Cross multiply
    78,001.90x = 117,002.85 × 76,446.70
  4. Step 4: Simplify right side
    78,001.90x = 8,944,481,773.10
  5. Step 5: Solve for x
    x = 8,944,481,773.10/78,001.90
  6. Step 6: Final answer
    x = 114,670.05

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1.5x scale

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.