Home / 91,919.72-126,839.31-51,637.92

Finding the Fourth Proportional to 91,919.72, 126,839.31 and 51,637.92

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Solution

The fourth proportional to 91,919.72, 126,839.31 and 51,637.92 is: 71,254.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,919.72 : 126,839.31 = 51,637.92 : x
  2. Step 2: Convert to fraction form
    91,919.72/126,839.31 = 51,637.92/x
  3. Step 3: Cross multiply
    91,919.72x = 126,839.31 × 51,637.92
  4. Step 4: Simplify right side
    91,919.72x = 6,549,718,142.64
  5. Step 5: Solve for x
    x = 6,549,718,142.64/91,919.72
  6. Step 6: Final answer
    x = 71,254.77

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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.