Home / 85,560.99-128,331.67-22,387.21

Finding the Fourth Proportional to 85,560.99, 128,331.67 and 22,387.21

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Solution

The fourth proportional to 85,560.99, 128,331.67 and 22,387.21 is: 33,578.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,560.99 : 128,331.67 = 22,387.21 : x
  2. Step 2: Convert to fraction form
    85,560.99/128,331.67 = 22,387.21/x
  3. Step 3: Cross multiply
    85,560.99x = 128,331.67 × 22,387.21
  4. Step 4: Simplify right side
    85,560.99x = 2,872,988,045.94
  5. Step 5: Solve for x
    x = 2,872,988,045.94/85,560.99
  6. Step 6: Final answer
    x = 33,578.25

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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.