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Finding the Fourth Proportional to 51,759.66, 71,463.74 and 39,638.76

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Solution

The fourth proportional to 51,759.66, 71,463.74 and 39,638.76 is: 54,728.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,759.66 : 71,463.74 = 39,638.76 : x
  2. Step 2: Convert to fraction form
    51,759.66/71,463.74 = 39,638.76/x
  3. Step 3: Cross multiply
    51,759.66x = 71,463.74 × 39,638.76
  4. Step 4: Simplify right side
    51,759.66x = 2,832,733,681.24
  5. Step 5: Solve for x
    x = 2,832,733,681.24/51,759.66
  6. Step 6: Final answer
    x = 54,728.60

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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.