Home / 78,359.64-117,586.14-28,443.62

Finding the Fourth Proportional to 78,359.64, 117,586.14 and 28,443.62

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Solution

The fourth proportional to 78,359.64, 117,586.14 and 28,443.62 is: 42,682.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,359.64 : 117,586.14 = 28,443.62 : x
  2. Step 2: Convert to fraction form
    78,359.64/117,586.14 = 28,443.62/x
  3. Step 3: Cross multiply
    78,359.64x = 117,586.14 × 28,443.62
  4. Step 4: Simplify right side
    78,359.64x = 3,344,575,483.43
  5. Step 5: Solve for x
    x = 3,344,575,483.43/78,359.64
  6. Step 6: Final answer
    x = 42,682.37

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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.