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Finding the Fourth Proportional to 51,709.78, 71,303.65 and 47,182.69

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Solution

The fourth proportional to 51,709.78, 71,303.65 and 47,182.69 is: 65,061.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,709.78 : 71,303.65 = 47,182.69 : x
  2. Step 2: Convert to fraction form
    51,709.78/71,303.65 = 47,182.69/x
  3. Step 3: Cross multiply
    51,709.78x = 71,303.65 × 47,182.69
  4. Step 4: Simplify right side
    51,709.78x = 3,364,298,013.82
  5. Step 5: Solve for x
    x = 3,364,298,013.82/51,709.78
  6. Step 6: Final answer
    x = 65,061.16

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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.