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Finding the Fourth Proportional to 90,960, 125,528.58 and 50,673.78

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Solution

The fourth proportional to 90,960, 125,528.58 and 50,673.78 is: 69,931.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,960 : 125,528.58 = 50,673.78 : x
  2. Step 2: Convert to fraction form
    90,960/125,528.58 = 50,673.78/x
  3. Step 3: Cross multiply
    90,960x = 125,528.58 × 50,673.78
  4. Step 4: Simplify right side
    90,960x = 6,361,007,646.63
  5. Step 5: Solve for x
    x = 6,361,007,646.63/90,960
  6. Step 6: Final answer
    x = 69,931.92

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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.