Home / 85,776.24-128,659.48-25,803.44

Finding the Fourth Proportional to 85,776.24, 128,659.48 and 25,803.44

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Solution

The fourth proportional to 85,776.24, 128,659.48 and 25,803.44 is: 38,703.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,776.24 : 128,659.48 = 25,803.44 : x
  2. Step 2: Convert to fraction form
    85,776.24/128,659.48 = 25,803.44/x
  3. Step 3: Cross multiply
    85,776.24x = 128,659.48 × 25,803.44
  4. Step 4: Simplify right side
    85,776.24x = 3,319,857,172.61
  5. Step 5: Solve for x
    x = 3,319,857,172.61/85,776.24
  6. Step 6: Final answer
    x = 38,703.69

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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.