Home / 51,931.53-71,642.07-31,780.35

Finding the Fourth Proportional to 51,931.53, 71,642.07 and 31,780.35

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Solution

The fourth proportional to 51,931.53, 71,642.07 and 31,780.35 is: 43,842.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,931.53 : 71,642.07 = 31,780.35 : x
  2. Step 2: Convert to fraction form
    51,931.53/71,642.07 = 31,780.35/x
  3. Step 3: Cross multiply
    51,931.53x = 71,642.07 × 31,780.35
  4. Step 4: Simplify right side
    51,931.53x = 2,276,810,059.32
  5. Step 5: Solve for x
    x = 2,276,810,059.32/51,931.53
  6. Step 6: Final answer
    x = 43,842.54

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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.