Home / 78,684.10-118,084.92-45,359.68

Finding the Fourth Proportional to 78,684.10, 118,084.92 and 45,359.68

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Solution

The fourth proportional to 78,684.10, 118,084.92 and 45,359.68 is: 68,073.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,684.10 : 118,084.92 = 45,359.68 : x
  2. Step 2: Convert to fraction form
    78,684.10/118,084.92 = 45,359.68/x
  3. Step 3: Cross multiply
    78,684.10x = 118,084.92 × 45,359.68
  4. Step 4: Simplify right side
    78,684.10x = 5,356,294,184.03
  5. Step 5: Solve for x
    x = 5,356,294,184.03/78,684.10
  6. Step 6: Final answer
    x = 68,073.40

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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.