Home / 91,921.03-126,864.73-56,131.79

Finding the Fourth Proportional to 91,921.03, 126,864.73 and 56,131.79

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Solution

The fourth proportional to 91,921.03, 126,864.73 and 56,131.79 is: 77,470.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,921.03 : 126,864.73 = 56,131.79 : x
  2. Step 2: Convert to fraction form
    91,921.03/126,864.73 = 56,131.79/x
  3. Step 3: Cross multiply
    91,921.03x = 126,864.73 × 56,131.79
  4. Step 4: Simplify right side
    91,921.03x = 7,121,143,818.61
  5. Step 5: Solve for x
    x = 7,121,143,818.61/91,921.03
  6. Step 6: Final answer
    x = 77,470.24

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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.