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Finding the Fourth Proportional to 85,901.44, 128,850.58 and 35,289.72

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Solution

The fourth proportional to 85,901.44, 128,850.58 and 35,289.72 is: 52,933.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,901.44 : 128,850.58 = 35,289.72 : x
  2. Step 2: Convert to fraction form
    85,901.44/128,850.58 = 35,289.72/x
  3. Step 3: Cross multiply
    85,901.44x = 128,850.58 × 35,289.72
  4. Step 4: Simplify right side
    85,901.44x = 4,547,100,890.04
  5. Step 5: Solve for x
    x = 4,547,100,890.04/85,901.44
  6. Step 6: Final answer
    x = 52,933.93

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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.