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Finding the Fourth Proportional to 90,602.70, 125,033.43 and 50,320.25

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Solution

The fourth proportional to 90,602.70, 125,033.43 and 50,320.25 is: 69,442.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,602.70 : 125,033.43 = 50,320.25 : x
  2. Step 2: Convert to fraction form
    90,602.70/125,033.43 = 50,320.25/x
  3. Step 3: Cross multiply
    90,602.70x = 125,033.43 × 50,320.25
  4. Step 4: Simplify right side
    90,602.70x = 6,291,712,830.79
  5. Step 5: Solve for x
    x = 6,291,712,830.79/90,602.70
  6. Step 6: Final answer
    x = 69,442.88

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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.