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Finding the Fourth Proportional to 80,313.72, 120,580.92 and 40,897.32

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Solution

The fourth proportional to 80,313.72, 120,580.92 and 40,897.32 is: 61,402.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,313.72 : 120,580.92 = 40,897.32 : x
  2. Step 2: Convert to fraction form
    80,313.72/120,580.92 = 40,897.32/x
  3. Step 3: Cross multiply
    80,313.72x = 120,580.92 × 40,897.32
  4. Step 4: Simplify right side
    80,313.72x = 4,931,436,471.13
  5. Step 5: Solve for x
    x = 4,931,436,471.13/80,313.72
  6. Step 6: Final answer
    x = 61,402.17

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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.