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Finding the Fourth Proportional to 78,119.01, 117,184.02 and 38,665.53

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Solution

The fourth proportional to 78,119.01, 117,184.02 and 38,665.53 is: 58,001.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,119.01 : 117,184.02 = 38,665.53 : x
  2. Step 2: Convert to fraction form
    78,119.01/117,184.02 = 38,665.53/x
  3. Step 3: Cross multiply
    78,119.01x = 117,184.02 × 38,665.53
  4. Step 4: Simplify right side
    78,119.01x = 4,530,982,240.83
  5. Step 5: Solve for x
    x = 4,530,982,240.83/78,119.01
  6. Step 6: Final answer
    x = 58,001.02

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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.