Home / 42,702.48-64,056.78-12,306.38

Finding the Fourth Proportional to 42,702.48, 64,056.78 and 12,306.38

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Solution

The fourth proportional to 42,702.48, 64,056.78 and 12,306.38 is: 18,460.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,702.48 : 64,056.78 = 12,306.38 : x
  2. Step 2: Convert to fraction form
    42,702.48/64,056.78 = 12,306.38/x
  3. Step 3: Cross multiply
    42,702.48x = 64,056.78 × 12,306.38
  4. Step 4: Simplify right side
    42,702.48x = 788,306,755.97
  5. Step 5: Solve for x
    x = 788,306,755.97/42,702.48
  6. Step 6: Final answer
    x = 18,460.44

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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.