Home / 71,577.32-107,371.38-18,985.28

Finding the Fourth Proportional to 71,577.32, 107,371.38 and 18,985.28

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Solution

The fourth proportional to 71,577.32, 107,371.38 and 18,985.28 is: 28,479.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,577.32 : 107,371.38 = 18,985.28 : x
  2. Step 2: Convert to fraction form
    71,577.32/107,371.38 = 18,985.28/x
  3. Step 3: Cross multiply
    71,577.32x = 107,371.38 × 18,985.28
  4. Step 4: Simplify right side
    71,577.32x = 2,038,475,713.29
  5. Step 5: Solve for x
    x = 2,038,475,713.29/71,577.32
  6. Step 6: Final answer
    x = 28,479.35

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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.