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Finding the Fourth Proportional to 75,080.88, 112,750.16 and 66,666.40

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Solution

The fourth proportional to 75,080.88, 112,750.16 and 66,666.40 is: 100,114.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,080.88 : 112,750.16 = 66,666.40 : x
  2. Step 2: Convert to fraction form
    75,080.88/112,750.16 = 66,666.40/x
  3. Step 3: Cross multiply
    75,080.88x = 112,750.16 × 66,666.40
  4. Step 4: Simplify right side
    75,080.88x = 7,516,647,266.62
  5. Step 5: Solve for x
    x = 7,516,647,266.62/75,080.88
  6. Step 6: Final answer
    x = 100,114.00

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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.