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Finding the Fourth Proportional to 85,601.60, 128,297.22 and 48,082.80

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Solution

The fourth proportional to 85,601.60, 128,297.22 and 48,082.80 is: 72,065.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,601.60 : 128,297.22 = 48,082.80 : x
  2. Step 2: Convert to fraction form
    85,601.60/128,297.22 = 48,082.80/x
  3. Step 3: Cross multiply
    85,601.60x = 128,297.22 × 48,082.80
  4. Step 4: Simplify right side
    85,601.60x = 6,168,889,569.82
  5. Step 5: Solve for x
    x = 6,168,889,569.82/85,601.60
  6. Step 6: Final answer
    x = 72,065.12

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1.5x scale

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.