Home / 78,155.57-117,043.28-36,614.45

Finding the Fourth Proportional to 78,155.57, 117,043.28 and 36,614.45

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Solution

The fourth proportional to 78,155.57, 117,043.28 and 36,614.45 is: 54,832.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,155.57 : 117,043.28 = 36,614.45 : x
  2. Step 2: Convert to fraction form
    78,155.57/117,043.28 = 36,614.45/x
  3. Step 3: Cross multiply
    78,155.57x = 117,043.28 × 36,614.45
  4. Step 4: Simplify right side
    78,155.57x = 4,285,475,140.32
  5. Step 5: Solve for x
    x = 4,285,475,140.32/78,155.57
  6. Step 6: Final answer
    x = 54,832.63

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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.