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Finding the Fourth Proportional to 64,315.94, 88,759.16 and 38,821.90

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Solution

The fourth proportional to 64,315.94, 88,759.16 and 38,821.90 is: 53,576.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,315.94 : 88,759.16 = 38,821.90 : x
  2. Step 2: Convert to fraction form
    64,315.94/88,759.16 = 38,821.90/x
  3. Step 3: Cross multiply
    64,315.94x = 88,759.16 × 38,821.90
  4. Step 4: Simplify right side
    64,315.94x = 3,445,799,330.66
  5. Step 5: Solve for x
    x = 3,445,799,330.66/64,315.94
  6. Step 6: Final answer
    x = 53,576.13

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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.