Home / 78,371.60-117,557.40-48,774.20

Finding the Fourth Proportional to 78,371.60, 117,557.40 and 48,774.20

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Solution

The fourth proportional to 78,371.60, 117,557.40 and 48,774.20 is: 73,161.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,371.60 : 117,557.40 = 48,774.20 : x
  2. Step 2: Convert to fraction form
    78,371.60/117,557.40 = 48,774.20/x
  3. Step 3: Cross multiply
    78,371.60x = 117,557.40 × 48,774.20
  4. Step 4: Simplify right side
    78,371.60x = 5,733,768,139.08
  5. Step 5: Solve for x
    x = 5,733,768,139.08/78,371.60
  6. Step 6: Final answer
    x = 73,161.30

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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.