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Finding the Fourth Proportional to 57,340.68, 86,045.64 and 40,837.94

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Solution

The fourth proportional to 57,340.68, 86,045.64 and 40,837.94 is: 61,281.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,340.68 : 86,045.64 = 40,837.94 : x
  2. Step 2: Convert to fraction form
    57,340.68/86,045.64 = 40,837.94/x
  3. Step 3: Cross multiply
    57,340.68x = 86,045.64 × 40,837.94
  4. Step 4: Simplify right side
    57,340.68x = 3,513,926,683.58
  5. Step 5: Solve for x
    x = 3,513,926,683.58/57,340.68
  6. Step 6: Final answer
    x = 61,281.57

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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.