Home / 90,871.67-136,329.07-28,542.17

Finding the Fourth Proportional to 90,871.67, 136,329.07 and 28,542.17

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Solution

The fourth proportional to 90,871.67, 136,329.07 and 28,542.17 is: 42,820.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,871.67 : 136,329.07 = 28,542.17 : x
  2. Step 2: Convert to fraction form
    90,871.67/136,329.07 = 28,542.17/x
  3. Step 3: Cross multiply
    90,871.67x = 136,329.07 × 28,542.17
  4. Step 4: Simplify right side
    90,871.67x = 3,891,127,491.88
  5. Step 5: Solve for x
    x = 3,891,127,491.88/90,871.67
  6. Step 6: Final answer
    x = 42,820.03

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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.