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Finding the Fourth Proportional to 60,396, 90,610.08 and 20,953.05

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Solution

The fourth proportional to 60,396, 90,610.08 and 20,953.05 is: 31,435.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,396 : 90,610.08 = 20,953.05 : x
  2. Step 2: Convert to fraction form
    60,396/90,610.08 = 20,953.05/x
  3. Step 3: Cross multiply
    60,396x = 90,610.08 × 20,953.05
  4. Step 4: Simplify right side
    60,396x = 1,898,557,536.74
  5. Step 5: Solve for x
    x = 1,898,557,536.74/60,396
  6. Step 6: Final answer
    x = 31,435.15

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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.