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Finding the Fourth Proportional to 85,144.55, 117,526.74 and 54,930.74

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Solution

The fourth proportional to 85,144.55, 117,526.74 and 54,930.74 is: 75,822.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,144.55 : 117,526.74 = 54,930.74 : x
  2. Step 2: Convert to fraction form
    85,144.55/117,526.74 = 54,930.74/x
  3. Step 3: Cross multiply
    85,144.55x = 117,526.74 × 54,930.74
  4. Step 4: Simplify right side
    85,144.55x = 6,455,830,797.99
  5. Step 5: Solve for x
    x = 6,455,830,797.99/85,144.55
  6. Step 6: Final answer
    x = 75,822.01

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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.