Home / 85,578.55-118,058.63-55,373.61

Finding the Fourth Proportional to 85,578.55, 118,058.63 and 55,373.61

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Solution

The fourth proportional to 85,578.55, 118,058.63 and 55,373.61 is: 76,389.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,578.55 : 118,058.63 = 55,373.61 : x
  2. Step 2: Convert to fraction form
    85,578.55/118,058.63 = 55,373.61/x
  3. Step 3: Cross multiply
    85,578.55x = 118,058.63 × 55,373.61
  4. Step 4: Simplify right side
    85,578.55x = 6,537,332,700.61
  5. Step 5: Solve for x
    x = 6,537,332,700.61/85,578.55
  6. Step 6: Final answer
    x = 76,389.85

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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.