Home / 84,643.12-126,862.76-31,292.56

Finding the Fourth Proportional to 84,643.12, 126,862.76 and 31,292.56

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Solution

The fourth proportional to 84,643.12, 126,862.76 and 31,292.56 is: 46,901.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,643.12 : 126,862.76 = 31,292.56 : x
  2. Step 2: Convert to fraction form
    84,643.12/126,862.76 = 31,292.56/x
  3. Step 3: Cross multiply
    84,643.12x = 126,862.76 × 31,292.56
  4. Step 4: Simplify right side
    84,643.12x = 3,969,860,529.07
  5. Step 5: Solve for x
    x = 3,969,860,529.07/84,643.12
  6. Step 6: Final answer
    x = 46,901.16

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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.