Home / 54,307.10-74,940.72-31,649.78

Finding the Fourth Proportional to 54,307.10, 74,940.72 and 31,649.78

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Solution

The fourth proportional to 54,307.10, 74,940.72 and 31,649.78 is: 43,674.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,307.10 : 74,940.72 = 31,649.78 : x
  2. Step 2: Convert to fraction form
    54,307.10/74,940.72 = 31,649.78/x
  3. Step 3: Cross multiply
    54,307.10x = 74,940.72 × 31,649.78
  4. Step 4: Simplify right side
    54,307.10x = 2,371,857,369.71
  5. Step 5: Solve for x
    x = 2,371,857,369.71/54,307.10
  6. Step 6: Final answer
    x = 43,674.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.