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Finding the Fourth Proportional to 90,750.71, 125,235.72 and 50,468.20

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Solution

The fourth proportional to 90,750.71, 125,235.72 and 50,468.20 is: 69,645.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,750.71 : 125,235.72 = 50,468.20 : x
  2. Step 2: Convert to fraction form
    90,750.71/125,235.72 = 50,468.20/x
  3. Step 3: Cross multiply
    90,750.71x = 125,235.72 × 50,468.20
  4. Step 4: Simplify right side
    90,750.71x = 6,320,421,051.01
  5. Step 5: Solve for x
    x = 6,320,421,051.01/90,750.71
  6. Step 6: Final answer
    x = 69,645.97

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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.