Home / 89,107.76-133,661.40-39,825.20

Finding the Fourth Proportional to 89,107.76, 133,661.40 and 39,825.20

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Solution

The fourth proportional to 89,107.76, 133,661.40 and 39,825.20 is: 59,737.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,107.76 : 133,661.40 = 39,825.20 : x
  2. Step 2: Convert to fraction form
    89,107.76/133,661.40 = 39,825.20/x
  3. Step 3: Cross multiply
    89,107.76x = 133,661.40 × 39,825.20
  4. Step 4: Simplify right side
    89,107.76x = 5,323,091,987.28
  5. Step 5: Solve for x
    x = 5,323,091,987.28/89,107.76
  6. Step 6: Final answer
    x = 59,737.69

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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.