Home / 56,136.38-77,468.30-30,985.88

Finding the Fourth Proportional to 56,136.38, 77,468.30 and 30,985.88

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Solution

The fourth proportional to 56,136.38, 77,468.30 and 30,985.88 is: 42,760.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,136.38 : 77,468.30 = 30,985.88 : x
  2. Step 2: Convert to fraction form
    56,136.38/77,468.30 = 30,985.88/x
  3. Step 3: Cross multiply
    56,136.38x = 77,468.30 × 30,985.88
  4. Step 4: Simplify right side
    56,136.38x = 2,400,423,021.53
  5. Step 5: Solve for x
    x = 2,400,423,021.53/56,136.38
  6. Step 6: Final answer
    x = 42,760.56

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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.