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Finding the Fourth Proportional to 91,435.80, 126,193.02 and 51,151.80

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Solution

The fourth proportional to 91,435.80, 126,193.02 and 51,151.80 is: 70,595.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,435.80 : 126,193.02 = 51,151.80 : x
  2. Step 2: Convert to fraction form
    91,435.80/126,193.02 = 51,151.80/x
  3. Step 3: Cross multiply
    91,435.80x = 126,193.02 × 51,151.80
  4. Step 4: Simplify right side
    91,435.80x = 6,455,000,120.44
  5. Step 5: Solve for x
    x = 6,455,000,120.44/91,435.80
  6. Step 6: Final answer
    x = 70,595.98

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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.