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Finding the Fourth Proportional to 47,393.48, 65,393.78 and 28,531.82

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Solution

The fourth proportional to 47,393.48, 65,393.78 and 28,531.82 is: 39,368.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,393.48 : 65,393.78 = 28,531.82 : x
  2. Step 2: Convert to fraction form
    47,393.48/65,393.78 = 28,531.82/x
  3. Step 3: Cross multiply
    47,393.48x = 65,393.78 × 28,531.82
  4. Step 4: Simplify right side
    47,393.48x = 1,865,803,560.08
  5. Step 5: Solve for x
    x = 1,865,803,560.08/47,393.48
  6. Step 6: Final answer
    x = 39,368.36

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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.