Home / 78,343.14-117,489.78-25,740.48

Finding the Fourth Proportional to 78,343.14, 117,489.78 and 25,740.48

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Solution

The fourth proportional to 78,343.14, 117,489.78 and 25,740.48 is: 38,602.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,343.14 : 117,489.78 = 25,740.48 : x
  2. Step 2: Convert to fraction form
    78,343.14/117,489.78 = 25,740.48/x
  3. Step 3: Cross multiply
    78,343.14x = 117,489.78 × 25,740.48
  4. Step 4: Simplify right side
    78,343.14x = 3,024,243,332.29
  5. Step 5: Solve for x
    x = 3,024,243,332.29/78,343.14
  6. Step 6: Final answer
    x = 38,602.53

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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.