Home / 90,436.78-124,809.15-50,154.40

Finding the Fourth Proportional to 90,436.78, 124,809.15 and 50,154.40

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Solution

The fourth proportional to 90,436.78, 124,809.15 and 50,154.40 is: 69,216.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,436.78 : 124,809.15 = 50,154.40 : x
  2. Step 2: Convert to fraction form
    90,436.78/124,809.15 = 50,154.40/x
  3. Step 3: Cross multiply
    90,436.78x = 124,809.15 × 50,154.40
  4. Step 4: Simplify right side
    90,436.78x = 6,259,728,032.76
  5. Step 5: Solve for x
    x = 6,259,728,032.76/90,436.78
  6. Step 6: Final answer
    x = 69,216.62

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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.