Home / 83,454.51-125,182.31-21,125.01

Finding the Fourth Proportional to 83,454.51, 125,182.31 and 21,125.01

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Solution

The fourth proportional to 83,454.51, 125,182.31 and 21,125.01 is: 31,687.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,454.51 : 125,182.31 = 21,125.01 : x
  2. Step 2: Convert to fraction form
    83,454.51/125,182.31 = 21,125.01/x
  3. Step 3: Cross multiply
    83,454.51x = 125,182.31 × 21,125.01
  4. Step 4: Simplify right side
    83,454.51x = 2,644,477,444.95
  5. Step 5: Solve for x
    x = 2,644,477,444.95/83,454.51
  6. Step 6: Final answer
    x = 31,687.65

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.