Home / 85,592.42-128,305.19-35,686.78

Finding the Fourth Proportional to 85,592.42, 128,305.19 and 35,686.78

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Solution

The fourth proportional to 85,592.42, 128,305.19 and 35,686.78 is: 53,495.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,592.42 : 128,305.19 = 35,686.78 : x
  2. Step 2: Convert to fraction form
    85,592.42/128,305.19 = 35,686.78/x
  3. Step 3: Cross multiply
    85,592.42x = 128,305.19 × 35,686.78
  4. Step 4: Simplify right side
    85,592.42x = 4,578,799,377.82
  5. Step 5: Solve for x
    x = 4,578,799,377.82/85,592.42
  6. Step 6: Final answer
    x = 53,495.38

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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.