Home / 78,613.65-108,484.38-42,803.43

Finding the Fourth Proportional to 78,613.65, 108,484.38 and 42,803.43

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Solution

The fourth proportional to 78,613.65, 108,484.38 and 42,803.43 is: 59,067.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,613.65 : 108,484.38 = 42,803.43 : x
  2. Step 2: Convert to fraction form
    78,613.65/108,484.38 = 42,803.43/x
  3. Step 3: Cross multiply
    78,613.65x = 108,484.38 × 42,803.43
  4. Step 4: Simplify right side
    78,613.65x = 4,643,503,565.42
  5. Step 5: Solve for x
    x = 4,643,503,565.42/78,613.65
  6. Step 6: Final answer
    x = 59,067.40

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.