Home / 90,443.40-124,815-54,626.28

Finding the Fourth Proportional to 90,443.40, 124,815 and 54,626.28

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Solution

The fourth proportional to 90,443.40, 124,815 and 54,626.28 is: 75,386.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,443.40 : 124,815 = 54,626.28 : x
  2. Step 2: Convert to fraction form
    90,443.40/124,815 = 54,626.28/x
  3. Step 3: Cross multiply
    90,443.40x = 124,815 × 54,626.28
  4. Step 4: Simplify right side
    90,443.40x = 6,818,179,138.20
  5. Step 5: Solve for x
    x = 6,818,179,138.20/90,443.40
  6. Step 6: Final answer
    x = 75,386.14

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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.