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Finding the Fourth Proportional to 61,158.48, 84,284.40 and 47,708.40

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Solution

The fourth proportional to 61,158.48, 84,284.40 and 47,708.40 is: 65,748.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,158.48 : 84,284.40 = 47,708.40 : x
  2. Step 2: Convert to fraction form
    61,158.48/84,284.40 = 47,708.40/x
  3. Step 3: Cross multiply
    61,158.48x = 84,284.40 × 47,708.40
  4. Step 4: Simplify right side
    61,158.48x = 4,021,073,868.96
  5. Step 5: Solve for x
    x = 4,021,073,868.96/61,158.48
  6. Step 6: Final answer
    x = 65,748.43

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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.