Home / 81,726.66-112,782.02-45,427.16

Finding the Fourth Proportional to 81,726.66, 112,782.02 and 45,427.16

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Solution

The fourth proportional to 81,726.66, 112,782.02 and 45,427.16 is: 62,689.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,726.66 : 112,782.02 = 45,427.16 : x
  2. Step 2: Convert to fraction form
    81,726.66/112,782.02 = 45,427.16/x
  3. Step 3: Cross multiply
    81,726.66x = 112,782.02 × 45,427.16
  4. Step 4: Simplify right side
    81,726.66x = 5,123,366,303.75
  5. Step 5: Solve for x
    x = 5,123,366,303.75/81,726.66
  6. Step 6: Final answer
    x = 62,689.05

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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.