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Finding the Fourth Proportional to 40,447.60, 60,541.80 and 21,681.52

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Solution

The fourth proportional to 40,447.60, 60,541.80 and 21,681.52 is: 32,452.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,447.60 : 60,541.80 = 21,681.52 : x
  2. Step 2: Convert to fraction form
    40,447.60/60,541.80 = 21,681.52/x
  3. Step 3: Cross multiply
    40,447.60x = 60,541.80 × 21,681.52
  4. Step 4: Simplify right side
    40,447.60x = 1,312,638,247.54
  5. Step 5: Solve for x
    x = 1,312,638,247.54/40,447.60
  6. Step 6: Final answer
    x = 32,452.81

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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.