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Finding the Fourth Proportional to 47,859.40, 71,804.40 and 14,585.80

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Solution

The fourth proportional to 47,859.40, 71,804.40 and 14,585.80 is: 21,883.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,859.40 : 71,804.40 = 14,585.80 : x
  2. Step 2: Convert to fraction form
    47,859.40/71,804.40 = 14,585.80/x
  3. Step 3: Cross multiply
    47,859.40x = 71,804.40 × 14,585.80
  4. Step 4: Simplify right side
    47,859.40x = 1,047,324,617.52
  5. Step 5: Solve for x
    x = 1,047,324,617.52/47,859.40
  6. Step 6: Final answer
    x = 21,883.36

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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.