Home / 78,075.64-117,191.22-43,031.80

Finding the Fourth Proportional to 78,075.64, 117,191.22 and 43,031.80

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Solution

The fourth proportional to 78,075.64, 117,191.22 and 43,031.80 is: 64,590.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,075.64 : 117,191.22 = 43,031.80 : x
  2. Step 2: Convert to fraction form
    78,075.64/117,191.22 = 43,031.80/x
  3. Step 3: Cross multiply
    78,075.64x = 117,191.22 × 43,031.80
  4. Step 4: Simplify right side
    78,075.64x = 5,042,948,847.82
  5. Step 5: Solve for x
    x = 5,042,948,847.82/78,075.64
  6. Step 6: Final answer
    x = 64,590.56

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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.