Home / 78,855.10-118,301.51-26,265.04

Finding the Fourth Proportional to 78,855.10, 118,301.51 and 26,265.04

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Solution

The fourth proportional to 78,855.10, 118,301.51 and 26,265.04 is: 39,403.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,855.10 : 118,301.51 = 26,265.04 : x
  2. Step 2: Convert to fraction form
    78,855.10/118,301.51 = 26,265.04/x
  3. Step 3: Cross multiply
    78,855.10x = 118,301.51 × 26,265.04
  4. Step 4: Simplify right side
    78,855.10x = 3,107,193,892.21
  5. Step 5: Solve for x
    x = 3,107,193,892.21/78,855.10
  6. Step 6: Final answer
    x = 39,403.84

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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.