Home / 78,009.48-116,931.60-38,517.12

Finding the Fourth Proportional to 78,009.48, 116,931.60 and 38,517.12

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Solution

The fourth proportional to 78,009.48, 116,931.60 and 38,517.12 is: 57,734.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,009.48 : 116,931.60 = 38,517.12 : x
  2. Step 2: Convert to fraction form
    78,009.48/116,931.60 = 38,517.12/x
  3. Step 3: Cross multiply
    78,009.48x = 116,931.60 × 38,517.12
  4. Step 4: Simplify right side
    78,009.48x = 4,503,868,468.99
  5. Step 5: Solve for x
    x = 4,503,868,468.99/78,009.48
  6. Step 6: Final answer
    x = 57,734.89

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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.