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Finding the Fourth Proportional to 61,812.86, 85,277.61 and 40,327.88

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Solution

The fourth proportional to 61,812.86, 85,277.61 and 40,327.88 is: 55,636.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,812.86 : 85,277.61 = 40,327.88 : x
  2. Step 2: Convert to fraction form
    61,812.86/85,277.61 = 40,327.88/x
  3. Step 3: Cross multiply
    61,812.86x = 85,277.61 × 40,327.88
  4. Step 4: Simplify right side
    61,812.86x = 3,439,064,796.38
  5. Step 5: Solve for x
    x = 3,439,064,796.38/61,812.86
  6. Step 6: Final answer
    x = 55,636.72

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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.