Home / 79,708.48-109,998.02-47,877.92

Finding the Fourth Proportional to 79,708.48, 109,998.02 and 47,877.92

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Solution

The fourth proportional to 79,708.48, 109,998.02 and 47,877.92 is: 66,071.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,708.48 : 109,998.02 = 47,877.92 : x
  2. Step 2: Convert to fraction form
    79,708.48/109,998.02 = 47,877.92/x
  3. Step 3: Cross multiply
    79,708.48x = 109,998.02 × 47,877.92
  4. Step 4: Simplify right side
    79,708.48x = 5,266,476,401.72
  5. Step 5: Solve for x
    x = 5,266,476,401.72/79,708.48
  6. Step 6: Final answer
    x = 66,071.72

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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.