Home / 78,517.50-117,807.72-28,601.04

Finding the Fourth Proportional to 78,517.50, 117,807.72 and 28,601.04

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Solution

The fourth proportional to 78,517.50, 117,807.72 and 28,601.04 is: 42,913.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,517.50 : 117,807.72 = 28,601.04 : x
  2. Step 2: Convert to fraction form
    78,517.50/117,807.72 = 28,601.04/x
  3. Step 3: Cross multiply
    78,517.50x = 117,807.72 × 28,601.04
  4. Step 4: Simplify right side
    78,517.50x = 3,369,423,312.03
  5. Step 5: Solve for x
    x = 3,369,423,312.03/78,517.50
  6. Step 6: Final answer
    x = 42,913.02

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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.