Home / 85,631.46-128,459.49-26,471.75

Finding the Fourth Proportional to 85,631.46, 128,459.49 and 26,471.75

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Solution

The fourth proportional to 85,631.46, 128,459.49 and 26,471.75 is: 39,711.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,631.46 : 128,459.49 = 26,471.75 : x
  2. Step 2: Convert to fraction form
    85,631.46/128,459.49 = 26,471.75/x
  3. Step 3: Cross multiply
    85,631.46x = 128,459.49 × 26,471.75
  4. Step 4: Simplify right side
    85,631.46x = 3,400,546,911.74
  5. Step 5: Solve for x
    x = 3,400,546,911.74/85,631.46
  6. Step 6: Final answer
    x = 39,711.42

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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.