Home / 56,634.20-78,153.53-31,140.54

Finding the Fourth Proportional to 56,634.20, 78,153.53 and 31,140.54

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Solution

The fourth proportional to 56,634.20, 78,153.53 and 31,140.54 is: 42,973.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,634.20 : 78,153.53 = 31,140.54 : x
  2. Step 2: Convert to fraction form
    56,634.20/78,153.53 = 31,140.54/x
  3. Step 3: Cross multiply
    56,634.20x = 78,153.53 × 31,140.54
  4. Step 4: Simplify right side
    56,634.20x = 2,433,743,127.11
  5. Step 5: Solve for x
    x = 2,433,743,127.11/56,634.20
  6. Step 6: Final answer
    x = 42,973.03

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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.