Home / 91,930.02-126,877.16-56,140.78

Finding the Fourth Proportional to 91,930.02, 126,877.16 and 56,140.78

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Solution

The fourth proportional to 91,930.02, 126,877.16 and 56,140.78 is: 77,482.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,930.02 : 126,877.16 = 56,140.78 : x
  2. Step 2: Convert to fraction form
    91,930.02/126,877.16 = 56,140.78/x
  3. Step 3: Cross multiply
    91,930.02x = 126,877.16 × 56,140.78
  4. Step 4: Simplify right side
    91,930.02x = 7,122,982,726.58
  5. Step 5: Solve for x
    x = 7,122,982,726.58/91,930.02
  6. Step 6: Final answer
    x = 77,482.66

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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.