Home / 91,726.91-126,529.38-57,681.39

Finding the Fourth Proportional to 91,726.91, 126,529.38 and 57,681.39

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Solution

The fourth proportional to 91,726.91, 126,529.38 and 57,681.39 is: 79,566.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,726.91 : 126,529.38 = 57,681.39 : x
  2. Step 2: Convert to fraction form
    91,726.91/126,529.38 = 57,681.39/x
  3. Step 3: Cross multiply
    91,726.91x = 126,529.38 × 57,681.39
  4. Step 4: Simplify right side
    91,726.91x = 7,298,390,514.24
  5. Step 5: Solve for x
    x = 7,298,390,514.24/91,726.91
  6. Step 6: Final answer
    x = 79,566.52

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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.