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Finding the Fourth Proportional to 61,297.71, 84,619.80 and 40,913.52

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Solution

The fourth proportional to 61,297.71, 84,619.80 and 40,913.52 is: 56,479.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,297.71 : 84,619.80 = 40,913.52 : x
  2. Step 2: Convert to fraction form
    61,297.71/84,619.80 = 40,913.52/x
  3. Step 3: Cross multiply
    61,297.71x = 84,619.80 × 40,913.52
  4. Step 4: Simplify right side
    61,297.71x = 3,462,093,879.70
  5. Step 5: Solve for x
    x = 3,462,093,879.70/61,297.71
  6. Step 6: Final answer
    x = 56,479.99

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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.