Home / 42,658.80-63,988.20-27,145.20

Finding the Fourth Proportional to 42,658.80, 63,988.20 and 27,145.20

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Solution

The fourth proportional to 42,658.80, 63,988.20 and 27,145.20 is: 40,717.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,658.80 : 63,988.20 = 27,145.20 : x
  2. Step 2: Convert to fraction form
    42,658.80/63,988.20 = 27,145.20/x
  3. Step 3: Cross multiply
    42,658.80x = 63,988.20 × 27,145.20
  4. Step 4: Simplify right side
    42,658.80x = 1,736,972,486.64
  5. Step 5: Solve for x
    x = 1,736,972,486.64/42,658.80
  6. Step 6: Final answer
    x = 40,717.80

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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.