Home / 90,442.40-124,813.62-54,625.28

Finding the Fourth Proportional to 90,442.40, 124,813.62 and 54,625.28

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Solution

The fourth proportional to 90,442.40, 124,813.62 and 54,625.28 is: 75,384.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,442.40 : 124,813.62 = 54,625.28 : x
  2. Step 2: Convert to fraction form
    90,442.40/124,813.62 = 54,625.28/x
  3. Step 3: Cross multiply
    90,442.40x = 124,813.62 × 54,625.28
  4. Step 4: Simplify right side
    90,442.40x = 6,817,978,940.31
  5. Step 5: Solve for x
    x = 6,817,978,940.31/90,442.40
  6. Step 6: Final answer
    x = 75,384.76

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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.