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Finding the Fourth Proportional to 80,598.60, 120,897.90 and 55,715.40

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Solution

The fourth proportional to 80,598.60, 120,897.90 and 55,715.40 is: 83,573.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,598.60 : 120,897.90 = 55,715.40 : x
  2. Step 2: Convert to fraction form
    80,598.60/120,897.90 = 55,715.40/x
  3. Step 3: Cross multiply
    80,598.60x = 120,897.90 × 55,715.40
  4. Step 4: Simplify right side
    80,598.60x = 6,735,874,857.66
  5. Step 5: Solve for x
    x = 6,735,874,857.66/80,598.60
  6. Step 6: Final answer
    x = 83,573.10

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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.