Home / 90,567.40-124,977-50,279.20

Finding the Fourth Proportional to 90,567.40, 124,977 and 50,279.20

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Solution

The fourth proportional to 90,567.40, 124,977 and 50,279.20 is: 69,381.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,567.40 : 124,977 = 50,279.20 : x
  2. Step 2: Convert to fraction form
    90,567.40/124,977 = 50,279.20/x
  3. Step 3: Cross multiply
    90,567.40x = 124,977 × 50,279.20
  4. Step 4: Simplify right side
    90,567.40x = 6,283,743,578.40
  5. Step 5: Solve for x
    x = 6,283,743,578.40/90,567.40
  6. Step 6: Final answer
    x = 69,381.96

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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.