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Finding the Fourth Proportional to 62,942.56, 86,862.80 and 34,650.40

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Solution

The fourth proportional to 62,942.56, 86,862.80 and 34,650.40 is: 47,818.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,942.56 : 86,862.80 = 34,650.40 : x
  2. Step 2: Convert to fraction form
    62,942.56/86,862.80 = 34,650.40/x
  3. Step 3: Cross multiply
    62,942.56x = 86,862.80 × 34,650.40
  4. Step 4: Simplify right side
    62,942.56x = 3,009,830,765.12
  5. Step 5: Solve for x
    x = 3,009,830,765.12/62,942.56
  6. Step 6: Final answer
    x = 47,818.69

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1.5x scale

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.