Home / 78,971.03-118,462.76-26,380.70

Finding the Fourth Proportional to 78,971.03, 118,462.76 and 26,380.70

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Solution

The fourth proportional to 78,971.03, 118,462.76 and 26,380.70 is: 39,573.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,971.03 : 118,462.76 = 26,380.70 : x
  2. Step 2: Convert to fraction form
    78,971.03/118,462.76 = 26,380.70/x
  3. Step 3: Cross multiply
    78,971.03x = 118,462.76 × 26,380.70
  4. Step 4: Simplify right side
    78,971.03x = 3,125,129,808.51
  5. Step 5: Solve for x
    x = 3,125,129,808.51/78,971.03
  6. Step 6: Final answer
    x = 39,573.12

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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.