Home / 90,435.15-124,801.56-50,149.40

Finding the Fourth Proportional to 90,435.15, 124,801.56 and 50,149.40

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Solution

The fourth proportional to 90,435.15, 124,801.56 and 50,149.40 is: 69,206.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,435.15 : 124,801.56 = 50,149.40 : x
  2. Step 2: Convert to fraction form
    90,435.15/124,801.56 = 50,149.40/x
  3. Step 3: Cross multiply
    90,435.15x = 124,801.56 × 50,149.40
  4. Step 4: Simplify right side
    90,435.15x = 6,258,722,729.06
  5. Step 5: Solve for x
    x = 6,258,722,729.06/90,435.15
  6. Step 6: Final answer
    x = 69,206.75

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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.