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Finding the Fourth Proportional to 78,497.70, 117,746.55 and 48,948.90

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Solution

The fourth proportional to 78,497.70, 117,746.55 and 48,948.90 is: 73,423.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,497.70 : 117,746.55 = 48,948.90 : x
  2. Step 2: Convert to fraction form
    78,497.70/117,746.55 = 48,948.90/x
  3. Step 3: Cross multiply
    78,497.70x = 117,746.55 × 48,948.90
  4. Step 4: Simplify right side
    78,497.70x = 5,763,564,101.30
  5. Step 5: Solve for x
    x = 5,763,564,101.30/78,497.70
  6. Step 6: Final answer
    x = 73,423.35

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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.