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Finding the Fourth Proportional to 40,188, 60,275.52 and 28,465.68

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Solution

The fourth proportional to 40,188, 60,275.52 and 28,465.68 is: 42,693.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,188 : 60,275.52 = 28,465.68 : x
  2. Step 2: Convert to fraction form
    40,188/60,275.52 = 28,465.68/x
  3. Step 3: Cross multiply
    40,188x = 60,275.52 × 28,465.68
  4. Step 4: Simplify right side
    40,188x = 1,715,783,664.15
  5. Step 5: Solve for x
    x = 1,715,783,664.15/40,188
  6. Step 6: Final answer
    x = 42,693.93

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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.