Home / 80,921.48-121,222.02-38,168.36

Finding the Fourth Proportional to 80,921.48, 121,222.02 and 38,168.36

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Solution

The fourth proportional to 80,921.48, 121,222.02 and 38,168.36 is: 57,176.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,921.48 : 121,222.02 = 38,168.36 : x
  2. Step 2: Convert to fraction form
    80,921.48/121,222.02 = 38,168.36/x
  3. Step 3: Cross multiply
    80,921.48x = 121,222.02 × 38,168.36
  4. Step 4: Simplify right side
    80,921.48x = 4,626,845,699.29
  5. Step 5: Solve for x
    x = 4,626,845,699.29/80,921.48
  6. Step 6: Final answer
    x = 57,176.98

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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.