Home / 78,427.18-117,526.56-36,320.14

Finding the Fourth Proportional to 78,427.18, 117,526.56 and 36,320.14

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Solution

The fourth proportional to 78,427.18, 117,526.56 and 36,320.14 is: 54,427.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,427.18 : 117,526.56 = 36,320.14 : x
  2. Step 2: Convert to fraction form
    78,427.18/117,526.56 = 36,320.14/x
  3. Step 3: Cross multiply
    78,427.18x = 117,526.56 × 36,320.14
  4. Step 4: Simplify right side
    78,427.18x = 4,268,581,112.92
  5. Step 5: Solve for x
    x = 4,268,581,112.92/78,427.18
  6. Step 6: Final answer
    x = 54,427.32

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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.