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Finding the Fourth Proportional to 85,937.32, 128,912.90 and 32,654.81

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Solution

The fourth proportional to 85,937.32, 128,912.90 and 32,654.81 is: 48,984.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,937.32 : 128,912.90 = 32,654.81 : x
  2. Step 2: Convert to fraction form
    85,937.32/128,912.90 = 32,654.81/x
  3. Step 3: Cross multiply
    85,937.32x = 128,912.90 × 32,654.81
  4. Step 4: Simplify right side
    85,937.32x = 4,209,626,256.05
  5. Step 5: Solve for x
    x = 4,209,626,256.05/85,937.32
  6. Step 6: Final answer
    x = 48,984.84

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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.