Home / 78,941.43-118,420.11-25,631.19

Finding the Fourth Proportional to 78,941.43, 118,420.11 and 25,631.19

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Solution

The fourth proportional to 78,941.43, 118,420.11 and 25,631.19 is: 38,449.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,941.43 : 118,420.11 = 25,631.19 : x
  2. Step 2: Convert to fraction form
    78,941.43/118,420.11 = 25,631.19/x
  3. Step 3: Cross multiply
    78,941.43x = 118,420.11 × 25,631.19
  4. Step 4: Simplify right side
    78,941.43x = 3,035,248,339.23
  5. Step 5: Solve for x
    x = 3,035,248,339.23/78,941.43
  6. Step 6: Final answer
    x = 38,449.37

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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.