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Finding the Fourth Proportional to 95,012.98, 130,958.12 and 72,035.20

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Solution

The fourth proportional to 95,012.98, 130,958.12 and 72,035.20 is: 99,287.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    95,012.98 : 130,958.12 = 72,035.20 : x
  2. Step 2: Convert to fraction form
    95,012.98/130,958.12 = 72,035.20/x
  3. Step 3: Cross multiply
    95,012.98x = 130,958.12 × 72,035.20
  4. Step 4: Simplify right side
    95,012.98x = 9,433,593,711.03
  5. Step 5: Solve for x
    x = 9,433,593,711.03/95,012.98
  6. Step 6: Final answer
    x = 99,287.42

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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.