Home / 63,145.08-87,171.75-39,279.42

Finding the Fourth Proportional to 63,145.08, 87,171.75 and 39,279.42

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Solution

The fourth proportional to 63,145.08, 87,171.75 and 39,279.42 is: 54,225.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,145.08 : 87,171.75 = 39,279.42 : x
  2. Step 2: Convert to fraction form
    63,145.08/87,171.75 = 39,279.42/x
  3. Step 3: Cross multiply
    63,145.08x = 87,171.75 × 39,279.42
  4. Step 4: Simplify right side
    63,145.08x = 3,424,055,780.39
  5. Step 5: Solve for x
    x = 3,424,055,780.39/63,145.08
  6. Step 6: Final answer
    x = 54,225.22

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1.5x scale

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.