Home / 42,479.35-63,719.53-18,458.08

Finding the Fourth Proportional to 42,479.35, 63,719.53 and 18,458.08

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Solution

The fourth proportional to 42,479.35, 63,719.53 and 18,458.08 is: 27,687.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,479.35 : 63,719.53 = 18,458.08 : x
  2. Step 2: Convert to fraction form
    42,479.35/63,719.53 = 18,458.08/x
  3. Step 3: Cross multiply
    42,479.35x = 63,719.53 × 18,458.08
  4. Step 4: Simplify right side
    42,479.35x = 1,176,139,976.86
  5. Step 5: Solve for x
    x = 1,176,139,976.86/42,479.35
  6. Step 6: Final answer
    x = 27,687.34

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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.