Home / 84,130.75-126,159.17-31,503.32

Finding the Fourth Proportional to 84,130.75, 126,159.17 and 31,503.32

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Solution

The fourth proportional to 84,130.75, 126,159.17 and 31,503.32 is: 47,241.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,130.75 : 126,159.17 = 31,503.32 : x
  2. Step 2: Convert to fraction form
    84,130.75/126,159.17 = 31,503.32/x
  3. Step 3: Cross multiply
    84,130.75x = 126,159.17 × 31,503.32
  4. Step 4: Simplify right side
    84,130.75x = 3,974,431,915.13
  5. Step 5: Solve for x
    x = 3,974,431,915.13/84,130.75
  6. Step 6: Final answer
    x = 47,241.13

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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.