Home / 78,005.56-117,008.52-25,419.14

Finding the Fourth Proportional to 78,005.56, 117,008.52 and 25,419.14

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Solution

The fourth proportional to 78,005.56, 117,008.52 and 25,419.14 is: 38,128.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,005.56 : 117,008.52 = 25,419.14 : x
  2. Step 2: Convert to fraction form
    78,005.56/117,008.52 = 25,419.14/x
  3. Step 3: Cross multiply
    78,005.56x = 117,008.52 × 25,419.14
  4. Step 4: Simplify right side
    78,005.56x = 2,974,255,951.07
  5. Step 5: Solve for x
    x = 2,974,255,951.07/78,005.56
  6. Step 6: Final answer
    x = 38,128.77

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1.5x scale

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.