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Finding the Fourth Proportional to 91,907.61, 126,865.08 and 55,610.92

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Solution

The fourth proportional to 91,907.61, 126,865.08 and 55,610.92 is: 76,762.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,907.61 : 126,865.08 = 55,610.92 : x
  2. Step 2: Convert to fraction form
    91,907.61/126,865.08 = 55,610.92/x
  3. Step 3: Cross multiply
    91,907.61x = 126,865.08 × 55,610.92
  4. Step 4: Simplify right side
    91,907.61x = 7,055,083,814.67
  5. Step 5: Solve for x
    x = 7,055,083,814.67/91,907.61
  6. Step 6: Final answer
    x = 76,762.78

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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.