Home / 84,332.40-126,613.80-42,808.56

Finding the Fourth Proportional to 84,332.40, 126,613.80 and 42,808.56

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Solution

The fourth proportional to 84,332.40, 126,613.80 and 42,808.56 is: 64,271.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,332.40 : 126,613.80 = 42,808.56 : x
  2. Step 2: Convert to fraction form
    84,332.40/126,613.80 = 42,808.56/x
  3. Step 3: Cross multiply
    84,332.40x = 126,613.80 × 42,808.56
  4. Step 4: Simplify right side
    84,332.40x = 5,420,154,454.13
  5. Step 5: Solve for x
    x = 5,420,154,454.13/84,332.40
  6. Step 6: Final answer
    x = 64,271.32

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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.