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Finding the Fourth Proportional to 51,868.80, 77,803.20 and 47,276.10

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Solution

The fourth proportional to 51,868.80, 77,803.20 and 47,276.10 is: 70,914.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,868.80 : 77,803.20 = 47,276.10 : x
  2. Step 2: Convert to fraction form
    51,868.80/77,803.20 = 47,276.10/x
  3. Step 3: Cross multiply
    51,868.80x = 77,803.20 × 47,276.10
  4. Step 4: Simplify right side
    51,868.80x = 3,678,231,863.52
  5. Step 5: Solve for x
    x = 3,678,231,863.52/51,868.80
  6. Step 6: Final answer
    x = 70,914.15

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.