Home / 85,865.66-128,783.90-22,686.47

Finding the Fourth Proportional to 85,865.66, 128,783.90 and 22,686.47

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Solution

The fourth proportional to 85,865.66, 128,783.90 and 22,686.47 is: 34,025.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,865.66 : 128,783.90 = 22,686.47 : x
  2. Step 2: Convert to fraction form
    85,865.66/128,783.90 = 22,686.47/x
  3. Step 3: Cross multiply
    85,865.66x = 128,783.90 × 22,686.47
  4. Step 4: Simplify right side
    85,865.66x = 2,921,651,326.48
  5. Step 5: Solve for x
    x = 2,921,651,326.48/85,865.66
  6. Step 6: Final answer
    x = 34,025.84

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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.