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Finding the Fourth Proportional to 92,458.66, 138,704.19 and 39,870.22

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Solution

The fourth proportional to 92,458.66, 138,704.19 and 39,870.22 is: 59,812.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,458.66 : 138,704.19 = 39,870.22 : x
  2. Step 2: Convert to fraction form
    92,458.66/138,704.19 = 39,870.22/x
  3. Step 3: Cross multiply
    92,458.66x = 138,704.19 × 39,870.22
  4. Step 4: Simplify right side
    92,458.66x = 5,530,166,570.22
  5. Step 5: Solve for x
    x = 5,530,166,570.22/92,458.66
  6. Step 6: Final answer
    x = 59,812.32

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1.5x scale

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.