Home / 66,009.61-90,939.27-54,002.98

Finding the Fourth Proportional to 66,009.61, 90,939.27 and 54,002.98

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Solution

The fourth proportional to 66,009.61, 90,939.27 and 54,002.98 is: 74,398.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,009.61 : 90,939.27 = 54,002.98 : x
  2. Step 2: Convert to fraction form
    66,009.61/90,939.27 = 54,002.98/x
  3. Step 3: Cross multiply
    66,009.61x = 90,939.27 × 54,002.98
  4. Step 4: Simplify right side
    66,009.61x = 4,910,991,579.02
  5. Step 5: Solve for x
    x = 4,910,991,579.02/66,009.61
  6. Step 6: Final answer
    x = 74,398.13

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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.