Home / 78,817.13-118,203.80-21,877.94

Finding the Fourth Proportional to 78,817.13, 118,203.80 and 21,877.94

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Solution

The fourth proportional to 78,817.13, 118,203.80 and 21,877.94 is: 32,810.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,817.13 : 118,203.80 = 21,877.94 : x
  2. Step 2: Convert to fraction form
    78,817.13/118,203.80 = 21,877.94/x
  3. Step 3: Cross multiply
    78,817.13x = 118,203.80 × 21,877.94
  4. Step 4: Simplify right side
    78,817.13x = 2,586,056,332.70
  5. Step 5: Solve for x
    x = 2,586,056,332.70/78,817.13
  6. Step 6: Final answer
    x = 32,810.84

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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.