Home / 78,869.48-118,303.56-19,704.80

Finding the Fourth Proportional to 78,869.48, 118,303.56 and 19,704.80

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Solution

The fourth proportional to 78,869.48, 118,303.56 and 19,704.80 is: 29,557.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,869.48 : 118,303.56 = 19,704.80 : x
  2. Step 2: Convert to fraction form
    78,869.48/118,303.56 = 19,704.80/x
  3. Step 3: Cross multiply
    78,869.48x = 118,303.56 × 19,704.80
  4. Step 4: Simplify right side
    78,869.48x = 2,331,147,989.09
  5. Step 5: Solve for x
    x = 2,331,147,989.09/78,869.48
  6. Step 6: Final answer
    x = 29,557.04

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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.