Home / 85,723.35-128,605.56-35,775.66

Finding the Fourth Proportional to 85,723.35, 128,605.56 and 35,775.66

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Solution

The fourth proportional to 85,723.35, 128,605.56 and 35,775.66 is: 53,672.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,723.35 : 128,605.56 = 35,775.66 : x
  2. Step 2: Convert to fraction form
    85,723.35/128,605.56 = 35,775.66/x
  3. Step 3: Cross multiply
    85,723.35x = 128,605.56 × 35,775.66
  4. Step 4: Simplify right side
    85,723.35x = 4,600,948,788.67
  5. Step 5: Solve for x
    x = 4,600,948,788.67/85,723.35
  6. Step 6: Final answer
    x = 53,672.06

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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.