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Finding the Fourth Proportional to 61,937.40, 85,487.25 and 40,718.64

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Solution

The fourth proportional to 61,937.40, 85,487.25 and 40,718.64 is: 56,200.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,937.40 : 85,487.25 = 40,718.64 : x
  2. Step 2: Convert to fraction form
    61,937.40/85,487.25 = 40,718.64/x
  3. Step 3: Cross multiply
    61,937.40x = 85,487.25 × 40,718.64
  4. Step 4: Simplify right side
    61,937.40x = 3,480,924,557.34
  5. Step 5: Solve for x
    x = 3,480,924,557.34/61,937.40
  6. Step 6: Final answer
    x = 56,200.69

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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.