Home / 78,424.07-117,539.71-36,247.10

Finding the Fourth Proportional to 78,424.07, 117,539.71 and 36,247.10

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Solution

The fourth proportional to 78,424.07, 117,539.71 and 36,247.10 is: 54,326.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,424.07 : 117,539.71 = 36,247.10 : x
  2. Step 2: Convert to fraction form
    78,424.07/117,539.71 = 36,247.10/x
  3. Step 3: Cross multiply
    78,424.07x = 117,539.71 × 36,247.10
  4. Step 4: Simplify right side
    78,424.07x = 4,260,472,944.02
  5. Step 5: Solve for x
    x = 4,260,472,944.02/78,424.07
  6. Step 6: Final answer
    x = 54,326.09

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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.