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Finding the Fourth Proportional to 61,224.20, 91,739.10 and 40,423.40

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Solution

The fourth proportional to 61,224.20, 91,739.10 and 40,423.40 is: 60,570.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,224.20 : 91,739.10 = 40,423.40 : x
  2. Step 2: Convert to fraction form
    61,224.20/91,739.10 = 40,423.40/x
  3. Step 3: Cross multiply
    61,224.20x = 91,739.10 × 40,423.40
  4. Step 4: Simplify right side
    61,224.20x = 3,708,406,334.94
  5. Step 5: Solve for x
    x = 3,708,406,334.94/61,224.20
  6. Step 6: Final answer
    x = 60,570.92

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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.