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Finding the Fourth Proportional to 26,861.20, 40,291.80 and 26,472.40

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Solution

The fourth proportional to 26,861.20, 40,291.80 and 26,472.40 is: 39,708.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,861.20 : 40,291.80 = 26,472.40 : x
  2. Step 2: Convert to fraction form
    26,861.20/40,291.80 = 26,472.40/x
  3. Step 3: Cross multiply
    26,861.20x = 40,291.80 × 26,472.40
  4. Step 4: Simplify right side
    26,861.20x = 1,066,620,646.32
  5. Step 5: Solve for x
    x = 1,066,620,646.32/26,861.20
  6. Step 6: Final answer
    x = 39,708.60

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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.