Home / 78,097.12-117,153.56-21,937.36

Finding the Fourth Proportional to 78,097.12, 117,153.56 and 21,937.36

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Solution

The fourth proportional to 78,097.12, 117,153.56 and 21,937.36 is: 32,908.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,097.12 : 117,153.56 = 21,937.36 : x
  2. Step 2: Convert to fraction form
    78,097.12/117,153.56 = 21,937.36/x
  3. Step 3: Cross multiply
    78,097.12x = 117,153.56 × 21,937.36
  4. Step 4: Simplify right side
    78,097.12x = 2,570,039,821.00
  5. Step 5: Solve for x
    x = 2,570,039,821.00/78,097.12
  6. Step 6: Final answer
    x = 32,908.25

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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.