Home / 83,994.34-125,988.36-20,814.65

Finding the Fourth Proportional to 83,994.34, 125,988.36 and 20,814.65

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Solution

The fourth proportional to 83,994.34, 125,988.36 and 20,814.65 is: 31,221.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,994.34 : 125,988.36 = 20,814.65 : x
  2. Step 2: Convert to fraction form
    83,994.34/125,988.36 = 20,814.65/x
  3. Step 3: Cross multiply
    83,994.34x = 125,988.36 × 20,814.65
  4. Step 4: Simplify right side
    83,994.34x = 2,622,402,909.48
  5. Step 5: Solve for x
    x = 2,622,402,909.48/83,994.34
  6. Step 6: Final answer
    x = 31,221.19

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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.