Home / 90,456.08-124,787.40-56,442.56

Finding the Fourth Proportional to 90,456.08, 124,787.40 and 56,442.56

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Solution

The fourth proportional to 90,456.08, 124,787.40 and 56,442.56 is: 77,864.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,456.08 : 124,787.40 = 56,442.56 : x
  2. Step 2: Convert to fraction form
    90,456.08/124,787.40 = 56,442.56/x
  3. Step 3: Cross multiply
    90,456.08x = 124,787.40 × 56,442.56
  4. Step 4: Simplify right side
    90,456.08x = 7,043,320,311.74
  5. Step 5: Solve for x
    x = 7,043,320,311.74/90,456.08
  6. Step 6: Final answer
    x = 77,864.53

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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.