Home / 71,389.30-107,075.85-18,802.90

Finding the Fourth Proportional to 71,389.30, 107,075.85 and 18,802.90

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Solution

The fourth proportional to 71,389.30, 107,075.85 and 18,802.90 is: 28,202.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,389.30 : 107,075.85 = 18,802.90 : x
  2. Step 2: Convert to fraction form
    71,389.30/107,075.85 = 18,802.90/x
  3. Step 3: Cross multiply
    71,389.30x = 107,075.85 × 18,802.90
  4. Step 4: Simplify right side
    71,389.30x = 2,013,336,499.97
  5. Step 5: Solve for x
    x = 2,013,336,499.97/71,389.30
  6. Step 6: Final answer
    x = 28,202.22

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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.