Home / 28,154,165.78-42,231,389.29-9,958,377.72

Finding the Fourth Proportional to 28,154,165.78, 42,231,389.29 and 9,958,377.72

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Solution

The fourth proportional to 28,154,165.78, 42,231,389.29 and 9,958,377.72 is: 14,937,616.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,154,165.78 : 42,231,389.29 = 9,958,377.72 : x
  2. Step 2: Convert to fraction form
    28,154,165.78/42,231,389.29 = 9,958,377.72/x
  3. Step 3: Cross multiply
    28,154,165.78x = 42,231,389.29 × 9,958,377.72
  4. Step 4: Simplify right side
    28,154,165.78x = 420,556,126,278,261.62
  5. Step 5: Solve for x
    x = 420,556,126,278,261.62/28,154,165.78
  6. Step 6: Final answer
    x = 14,937,616.32

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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.