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Finding the Fourth Proportional to 91,309.75, 126,005.04 and 51,023.85

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Solution

The fourth proportional to 91,309.75, 126,005.04 and 51,023.85 is: 70,411.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,309.75 : 126,005.04 = 51,023.85 : x
  2. Step 2: Convert to fraction form
    91,309.75/126,005.04 = 51,023.85/x
  3. Step 3: Cross multiply
    91,309.75x = 126,005.04 × 51,023.85
  4. Step 4: Simplify right side
    91,309.75x = 6,429,261,692.02
  5. Step 5: Solve for x
    x = 6,429,261,692.02/91,309.75
  6. Step 6: Final answer
    x = 70,411.55

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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.