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Finding the Fourth Proportional to 47,062.63, 70,178.79 and 40,530.79

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Solution

The fourth proportional to 47,062.63, 70,178.79 and 40,530.79 is: 60,438.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,062.63 : 70,178.79 = 40,530.79 : x
  2. Step 2: Convert to fraction form
    47,062.63/70,178.79 = 40,530.79/x
  3. Step 3: Cross multiply
    47,062.63x = 70,178.79 × 40,530.79
  4. Step 4: Simplify right side
    47,062.63x = 2,844,401,799.94
  5. Step 5: Solve for x
    x = 2,844,401,799.94/47,062.63
  6. Step 6: Final answer
    x = 60,438.65

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.