Home / 78,482.08-117,720.48-34,108.80

Finding the Fourth Proportional to 78,482.08, 117,720.48 and 34,108.80

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Solution

The fourth proportional to 78,482.08, 117,720.48 and 34,108.80 is: 51,162.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,482.08 : 117,720.48 = 34,108.80 : x
  2. Step 2: Convert to fraction form
    78,482.08/117,720.48 = 34,108.80/x
  3. Step 3: Cross multiply
    78,482.08x = 117,720.48 × 34,108.80
  4. Step 4: Simplify right side
    78,482.08x = 4,015,304,308.22
  5. Step 5: Solve for x
    x = 4,015,304,308.22/78,482.08
  6. Step 6: Final answer
    x = 51,162.05

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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.