Home / 83,451.51-125,177.36-21,122.01

Finding the Fourth Proportional to 83,451.51, 125,177.36 and 21,122.01

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Solution

The fourth proportional to 83,451.51, 125,177.36 and 21,122.01 is: 31,683.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,451.51 : 125,177.36 = 21,122.01 : x
  2. Step 2: Convert to fraction form
    83,451.51/125,177.36 = 21,122.01/x
  3. Step 3: Cross multiply
    83,451.51x = 125,177.36 × 21,122.01
  4. Step 4: Simplify right side
    83,451.51x = 2,643,997,344.08
  5. Step 5: Solve for x
    x = 2,643,997,344.08/83,451.51
  6. Step 6: Final answer
    x = 31,683.04

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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.