Home / 90,393.40-124,729.78-50,107.15

Finding the Fourth Proportional to 90,393.40, 124,729.78 and 50,107.15

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Solution

The fourth proportional to 90,393.40, 124,729.78 and 50,107.15 is: 69,140.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,393.40 : 124,729.78 = 50,107.15 : x
  2. Step 2: Convert to fraction form
    90,393.40/124,729.78 = 50,107.15/x
  3. Step 3: Cross multiply
    90,393.40x = 124,729.78 × 50,107.15
  4. Step 4: Simplify right side
    90,393.40x = 6,249,853,795.93
  5. Step 5: Solve for x
    x = 6,249,853,795.93/90,393.40
  6. Step 6: Final answer
    x = 69,140.60

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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.