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Finding the Fourth Proportional to 61,941.76, 85,486.80 and 58,141.65

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Solution

The fourth proportional to 61,941.76, 85,486.80 and 58,141.65 is: 80,242.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,941.76 : 85,486.80 = 58,141.65 : x
  2. Step 2: Convert to fraction form
    61,941.76/85,486.80 = 58,141.65/x
  3. Step 3: Cross multiply
    61,941.76x = 85,486.80 × 58,141.65
  4. Step 4: Simplify right side
    61,941.76x = 4,970,343,177.79
  5. Step 5: Solve for x
    x = 4,970,343,177.79/61,941.76
  6. Step 6: Final answer
    x = 80,242.20

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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.