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Finding the Fourth Proportional to 90,602.01, 125,010.63 and 54,791.28

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Solution

The fourth proportional to 90,602.01, 125,010.63 and 54,791.28 is: 75,599.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,602.01 : 125,010.63 = 54,791.28 : x
  2. Step 2: Convert to fraction form
    90,602.01/125,010.63 = 54,791.28/x
  3. Step 3: Cross multiply
    90,602.01x = 125,010.63 × 54,791.28
  4. Step 4: Simplify right side
    90,602.01x = 6,849,492,431.31
  5. Step 5: Solve for x
    x = 6,849,492,431.31/90,602.01
  6. Step 6: Final answer
    x = 75,599.78

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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.