Home / 56,549.78-78,042.21-31,399.46

Finding the Fourth Proportional to 56,549.78, 78,042.21 and 31,399.46

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Solution

The fourth proportional to 56,549.78, 78,042.21 and 31,399.46 is: 43,333.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,549.78 : 78,042.21 = 31,399.46 : x
  2. Step 2: Convert to fraction form
    56,549.78/78,042.21 = 31,399.46/x
  3. Step 3: Cross multiply
    56,549.78x = 78,042.21 × 31,399.46
  4. Step 4: Simplify right side
    56,549.78x = 2,450,483,251.21
  5. Step 5: Solve for x
    x = 2,450,483,251.21/56,549.78
  6. Step 6: Final answer
    x = 43,333.21

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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.