Home / 78,790.32-118,207.35-33,218.10

Finding the Fourth Proportional to 78,790.32, 118,207.35 and 33,218.10

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Solution

The fourth proportional to 78,790.32, 118,207.35 and 33,218.10 is: 49,836.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,790.32 : 118,207.35 = 33,218.10 : x
  2. Step 2: Convert to fraction form
    78,790.32/118,207.35 = 33,218.10/x
  3. Step 3: Cross multiply
    78,790.32x = 118,207.35 × 33,218.10
  4. Step 4: Simplify right side
    78,790.32x = 3,926,623,573.04
  5. Step 5: Solve for x
    x = 3,926,623,573.04/78,790.32
  6. Step 6: Final answer
    x = 49,836.37

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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.