Home / 84,747.22-127,080.42-31,402.60

Finding the Fourth Proportional to 84,747.22, 127,080.42 and 31,402.60

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Solution

The fourth proportional to 84,747.22, 127,080.42 and 31,402.60 is: 47,088.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,747.22 : 127,080.42 = 31,402.60 : x
  2. Step 2: Convert to fraction form
    84,747.22/127,080.42 = 31,402.60/x
  3. Step 3: Cross multiply
    84,747.22x = 127,080.42 × 31,402.60
  4. Step 4: Simplify right side
    84,747.22x = 3,990,655,597.09
  5. Step 5: Solve for x
    x = 3,990,655,597.09/84,747.22
  6. Step 6: Final answer
    x = 47,088.93

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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.