Home / 78,839.40-118,259.10-49,314.90

Finding the Fourth Proportional to 78,839.40, 118,259.10 and 49,314.90

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Solution

The fourth proportional to 78,839.40, 118,259.10 and 49,314.90 is: 73,972.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,839.40 : 118,259.10 = 49,314.90 : x
  2. Step 2: Convert to fraction form
    78,839.40/118,259.10 = 49,314.90/x
  3. Step 3: Cross multiply
    78,839.40x = 118,259.10 × 49,314.90
  4. Step 4: Simplify right side
    78,839.40x = 5,831,935,690.59
  5. Step 5: Solve for x
    x = 5,831,935,690.59/78,839.40
  6. Step 6: Final answer
    x = 73,972.35

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Similar ratio
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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.