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Finding the Fourth Proportional to 72,014.61, 99,397.95 and 43,743.99

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Solution

The fourth proportional to 72,014.61, 99,397.95 and 43,743.99 is: 60,377.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,014.61 : 99,397.95 = 43,743.99 : x
  2. Step 2: Convert to fraction form
    72,014.61/99,397.95 = 43,743.99/x
  3. Step 3: Cross multiply
    72,014.61x = 99,397.95 × 43,743.99
  4. Step 4: Simplify right side
    72,014.61x = 4,348,062,930.82
  5. Step 5: Solve for x
    x = 4,348,062,930.82/72,014.61
  6. Step 6: Final answer
    x = 60,377.51

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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.