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Finding the Fourth Proportional to 85,585.54, 128,494.74 and 48,172.04

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Solution

The fourth proportional to 85,585.54, 128,494.74 and 48,172.04 is: 72,323.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,585.54 : 128,494.74 = 48,172.04 : x
  2. Step 2: Convert to fraction form
    85,585.54/128,494.74 = 48,172.04/x
  3. Step 3: Cross multiply
    85,585.54x = 128,494.74 × 48,172.04
  4. Step 4: Simplify right side
    85,585.54x = 6,189,853,755.07
  5. Step 5: Solve for x
    x = 6,189,853,755.07/85,585.54
  6. Step 6: Final answer
    x = 72,323.59

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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.