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Finding the Fourth Proportional to 92,003.80, 138,005.70 and 57,011.80

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Solution

The fourth proportional to 92,003.80, 138,005.70 and 57,011.80 is: 85,517.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,003.80 : 138,005.70 = 57,011.80 : x
  2. Step 2: Convert to fraction form
    92,003.80/138,005.70 = 57,011.80/x
  3. Step 3: Cross multiply
    92,003.80x = 138,005.70 × 57,011.80
  4. Step 4: Simplify right side
    92,003.80x = 7,867,953,367.26
  5. Step 5: Solve for x
    x = 7,867,953,367.26/92,003.80
  6. Step 6: Final answer
    x = 85,517.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.