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Finding the Fourth Proportional to 94,203.74, 129,911.90 and 61,881.50

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Solution

The fourth proportional to 94,203.74, 129,911.90 and 61,881.50 is: 85,337.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    94,203.74 : 129,911.90 = 61,881.50 : x
  2. Step 2: Convert to fraction form
    94,203.74/129,911.90 = 61,881.50/x
  3. Step 3: Cross multiply
    94,203.74x = 129,911.90 × 61,881.50
  4. Step 4: Simplify right side
    94,203.74x = 8,039,142,280.88
  5. Step 5: Solve for x
    x = 8,039,142,280.88/94,203.74
  6. Step 6: Final answer
    x = 85,337.83

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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.