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Finding the Fourth Proportional to 85,351.71, 128,041.42 and 32,047.89

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Solution

The fourth proportional to 85,351.71, 128,041.42 and 32,047.89 is: 48,077.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,351.71 : 128,041.42 = 32,047.89 : x
  2. Step 2: Convert to fraction form
    85,351.71/128,041.42 = 32,047.89/x
  3. Step 3: Cross multiply
    85,351.71x = 128,041.42 × 32,047.89
  4. Step 4: Simplify right side
    85,351.71x = 4,103,457,343.60
  5. Step 5: Solve for x
    x = 4,103,457,343.60/85,351.71
  6. Step 6: Final answer
    x = 48,077.04

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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.