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Finding the Fourth Proportional to 90,801.41, 125,310 and 75,668.75

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Solution

The fourth proportional to 90,801.41, 125,310 and 75,668.75 is: 104,426.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,801.41 : 125,310 = 75,668.75 : x
  2. Step 2: Convert to fraction form
    90,801.41/125,310 = 75,668.75/x
  3. Step 3: Cross multiply
    90,801.41x = 125,310 × 75,668.75
  4. Step 4: Simplify right side
    90,801.41x = 9,482,050,435.95
  5. Step 5: Solve for x
    x = 9,482,050,435.95/90,801.41
  6. Step 6: Final answer
    x = 104,426.25

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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.