Home / 78,808.59-118,145.70-34,402.14

Finding the Fourth Proportional to 78,808.59, 118,145.70 and 34,402.14

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Solution

The fourth proportional to 78,808.59, 118,145.70 and 34,402.14 is: 51,573.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,808.59 : 118,145.70 = 34,402.14 : x
  2. Step 2: Convert to fraction form
    78,808.59/118,145.70 = 34,402.14/x
  3. Step 3: Cross multiply
    78,808.59x = 118,145.70 × 34,402.14
  4. Step 4: Simplify right side
    78,808.59x = 4,064,464,911.80
  5. Step 5: Solve for x
    x = 4,064,464,911.80/78,808.59
  6. Step 6: Final answer
    x = 51,573.88

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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.