Home / 85,449.24-128,175.84-26,285.40

Finding the Fourth Proportional to 85,449.24, 128,175.84 and 26,285.40

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Solution

The fourth proportional to 85,449.24, 128,175.84 and 26,285.40 is: 39,428.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,449.24 : 128,175.84 = 26,285.40 : x
  2. Step 2: Convert to fraction form
    85,449.24/128,175.84 = 26,285.40/x
  3. Step 3: Cross multiply
    85,449.24x = 128,175.84 × 26,285.40
  4. Step 4: Simplify right side
    85,449.24x = 3,369,153,224.74
  5. Step 5: Solve for x
    x = 3,369,153,224.74/85,449.24
  6. Step 6: Final answer
    x = 39,428.71

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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.