Home / 85,501.10-128,251.65-23,171.60

Finding the Fourth Proportional to 85,501.10, 128,251.65 and 23,171.60

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Solution

The fourth proportional to 85,501.10, 128,251.65 and 23,171.60 is: 34,757.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,501.10 : 128,251.65 = 23,171.60 : x
  2. Step 2: Convert to fraction form
    85,501.10/128,251.65 = 23,171.60/x
  3. Step 3: Cross multiply
    85,501.10x = 128,251.65 × 23,171.60
  4. Step 4: Simplify right side
    85,501.10x = 2,971,795,933.14
  5. Step 5: Solve for x
    x = 2,971,795,933.14/85,501.10
  6. Step 6: Final answer
    x = 34,757.40

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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.