Home / 66,078.81-99,137.66-26,615.61

Finding the Fourth Proportional to 66,078.81, 99,137.66 and 26,615.61

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Solution

The fourth proportional to 66,078.81, 99,137.66 and 26,615.61 is: 39,931.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,078.81 : 99,137.66 = 26,615.61 : x
  2. Step 2: Convert to fraction form
    66,078.81/99,137.66 = 26,615.61/x
  3. Step 3: Cross multiply
    66,078.81x = 99,137.66 × 26,615.61
  4. Step 4: Simplify right side
    66,078.81x = 2,638,609,161.79
  5. Step 5: Solve for x
    x = 2,638,609,161.79/66,078.81
  6. Step 6: Final answer
    x = 39,931.25

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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.