Home / 66,115.86-99,154.95-18,727.82

Finding the Fourth Proportional to 66,115.86, 99,154.95 and 18,727.82

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Solution

The fourth proportional to 66,115.86, 99,154.95 and 18,727.82 is: 28,086.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,115.86 : 99,154.95 = 18,727.82 : x
  2. Step 2: Convert to fraction form
    66,115.86/99,154.95 = 18,727.82/x
  3. Step 3: Cross multiply
    66,115.86x = 99,154.95 × 18,727.82
  4. Step 4: Simplify right side
    66,115.86x = 1,856,956,055.71
  5. Step 5: Solve for x
    x = 1,856,956,055.71/66,115.86
  6. Step 6: Final answer
    x = 28,086.39

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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.