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Finding the Fourth Proportional to 71,812.64, 107,670.36 and 25,040

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Solution

The fourth proportional to 71,812.64, 107,670.36 and 25,040 is: 37,543.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,812.64 : 107,670.36 = 25,040 : x
  2. Step 2: Convert to fraction form
    71,812.64/107,670.36 = 25,040/x
  3. Step 3: Cross multiply
    71,812.64x = 107,670.36 × 25,040
  4. Step 4: Simplify right side
    71,812.64x = 2,696,065,814.40
  5. Step 5: Solve for x
    x = 2,696,065,814.40/71,812.64
  6. Step 6: Final answer
    x = 37,543.05

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.