Home / 66,618.78-99,999.27-28,686.81

Finding the Fourth Proportional to 66,618.78, 99,999.27 and 28,686.81

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Solution

The fourth proportional to 66,618.78, 99,999.27 and 28,686.81 is: 43,060.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,618.78 : 99,999.27 = 28,686.81 : x
  2. Step 2: Convert to fraction form
    66,618.78/99,999.27 = 28,686.81/x
  3. Step 3: Cross multiply
    66,618.78x = 99,999.27 × 28,686.81
  4. Step 4: Simplify right side
    66,618.78x = 2,868,660,058.63
  5. Step 5: Solve for x
    x = 2,868,660,058.63/66,618.78
  6. Step 6: Final answer
    x = 43,060.83

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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.