Home / 84,179.34-126,289.08-31,589.28

Finding the Fourth Proportional to 84,179.34, 126,289.08 and 31,589.28

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Solution

The fourth proportional to 84,179.34, 126,289.08 and 31,589.28 is: 47,391.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,179.34 : 126,289.08 = 31,589.28 : x
  2. Step 2: Convert to fraction form
    84,179.34/126,289.08 = 31,589.28/x
  3. Step 3: Cross multiply
    84,179.34x = 126,289.08 × 31,589.28
  4. Step 4: Simplify right side
    84,179.34x = 3,989,381,109.06
  5. Step 5: Solve for x
    x = 3,989,381,109.06/84,179.34
  6. Step 6: Final answer
    x = 47,391.45

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1.5x scale

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.