Home / 78,020.60-117,043.04-25,417.84

Finding the Fourth Proportional to 78,020.60, 117,043.04 and 25,417.84

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Solution

The fourth proportional to 78,020.60, 117,043.04 and 25,417.84 is: 38,130.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,020.60 : 117,043.04 = 25,417.84 : x
  2. Step 2: Convert to fraction form
    78,020.60/117,043.04 = 25,417.84/x
  3. Step 3: Cross multiply
    78,020.60x = 117,043.04 × 25,417.84
  4. Step 4: Simplify right side
    78,020.60x = 2,974,981,263.83
  5. Step 5: Solve for x
    x = 2,974,981,263.83/78,020.60
  6. Step 6: Final answer
    x = 38,130.72

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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.