Home / 84,031.16-126,011.10-31,403.84

Finding the Fourth Proportional to 84,031.16, 126,011.10 and 31,403.84

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Solution

The fourth proportional to 84,031.16, 126,011.10 and 31,403.84 is: 47,092.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,031.16 : 126,011.10 = 31,403.84 : x
  2. Step 2: Convert to fraction form
    84,031.16/126,011.10 = 31,403.84/x
  3. Step 3: Cross multiply
    84,031.16x = 126,011.10 × 31,403.84
  4. Step 4: Simplify right side
    84,031.16x = 3,957,232,422.62
  5. Step 5: Solve for x
    x = 3,957,232,422.62/84,031.16
  6. Step 6: Final answer
    x = 47,092.44

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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.