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Finding the Fourth Proportional to 91,887.01, 127,031.49 and 91,045.42

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Solution

The fourth proportional to 91,887.01, 127,031.49 and 91,045.42 is: 125,868.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,887.01 : 127,031.49 = 91,045.42 : x
  2. Step 2: Convert to fraction form
    91,887.01/127,031.49 = 91,045.42/x
  3. Step 3: Cross multiply
    91,887.01x = 127,031.49 × 91,045.42
  4. Step 4: Simplify right side
    91,887.01x = 11,565,635,360.28
  5. Step 5: Solve for x
    x = 11,565,635,360.28/91,887.01
  6. Step 6: Final answer
    x = 125,868.01

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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.