Home / 85,347.18-117,728.28-55,150.23

Finding the Fourth Proportional to 85,347.18, 117,728.28 and 55,150.23

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Solution

The fourth proportional to 85,347.18, 117,728.28 and 55,150.23 is: 76,074.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,347.18 : 117,728.28 = 55,150.23 : x
  2. Step 2: Convert to fraction form
    85,347.18/117,728.28 = 55,150.23/x
  3. Step 3: Cross multiply
    85,347.18x = 117,728.28 × 55,150.23
  4. Step 4: Simplify right side
    85,347.18x = 6,492,741,719.50
  5. Step 5: Solve for x
    x = 6,492,741,719.50/85,347.18
  6. Step 6: Final answer
    x = 76,074.47

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Find fourth proportional to 85,348.18, 117,729.66 and 55,151.23
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1.5x scale

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.