Home / 78,690.24-108,591.93-42,880.14

Finding the Fourth Proportional to 78,690.24, 108,591.93 and 42,880.14

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Solution

The fourth proportional to 78,690.24, 108,591.93 and 42,880.14 is: 59,174.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,690.24 : 108,591.93 = 42,880.14 : x
  2. Step 2: Convert to fraction form
    78,690.24/108,591.93 = 42,880.14/x
  3. Step 3: Cross multiply
    78,690.24x = 108,591.93 × 42,880.14
  4. Step 4: Simplify right side
    78,690.24x = 4,656,437,161.27
  5. Step 5: Solve for x
    x = 4,656,437,161.27/78,690.24
  6. Step 6: Final answer
    x = 59,174.27

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.