Home / 91,387.08-126,119.09-51,100.72

Finding the Fourth Proportional to 91,387.08, 126,119.09 and 51,100.72

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Solution

The fourth proportional to 91,387.08, 126,119.09 and 51,100.72 is: 70,521.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,387.08 : 126,119.09 = 51,100.72 : x
  2. Step 2: Convert to fraction form
    91,387.08/126,119.09 = 51,100.72/x
  3. Step 3: Cross multiply
    91,387.08x = 126,119.09 × 51,100.72
  4. Step 4: Simplify right side
    91,387.08x = 6,444,776,304.74
  5. Step 5: Solve for x
    x = 6,444,776,304.74/91,387.08
  6. Step 6: Final answer
    x = 70,521.74

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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.