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Finding the Fourth Proportional to 61,585.68, 85,024.96 and 40,401.76

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Solution

The fourth proportional to 61,585.68, 85,024.96 and 40,401.76 is: 55,778.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,585.68 : 85,024.96 = 40,401.76 : x
  2. Step 2: Convert to fraction form
    61,585.68/85,024.96 = 40,401.76/x
  3. Step 3: Cross multiply
    61,585.68x = 85,024.96 × 40,401.76
  4. Step 4: Simplify right side
    61,585.68x = 3,435,158,027.93
  5. Step 5: Solve for x
    x = 3,435,158,027.93/61,585.68
  6. Step 6: Final answer
    x = 55,778.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.