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Finding the Fourth Proportional to 60,672.30, 90,897.40 and 43,990.89

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Solution

The fourth proportional to 60,672.30, 90,897.40 and 43,990.89 is: 65,905.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,672.30 : 90,897.40 = 43,990.89 : x
  2. Step 2: Convert to fraction form
    60,672.30/90,897.40 = 43,990.89/x
  3. Step 3: Cross multiply
    60,672.30x = 90,897.40 × 43,990.89
  4. Step 4: Simplify right side
    60,672.30x = 3,998,657,524.69
  5. Step 5: Solve for x
    x = 3,998,657,524.69/60,672.30
  6. Step 6: Final answer
    x = 65,905.82

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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.