Home / 78,368.12-117,572.07-36,278.54

Finding the Fourth Proportional to 78,368.12, 117,572.07 and 36,278.54

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Solution

The fourth proportional to 78,368.12, 117,572.07 and 36,278.54 is: 54,427.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,368.12 : 117,572.07 = 36,278.54 : x
  2. Step 2: Convert to fraction form
    78,368.12/117,572.07 = 36,278.54/x
  3. Step 3: Cross multiply
    78,368.12x = 117,572.07 × 36,278.54
  4. Step 4: Simplify right side
    78,368.12x = 4,265,343,044.38
  5. Step 5: Solve for x
    x = 4,265,343,044.38/78,368.12
  6. Step 6: Final answer
    x = 54,427.02

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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.