Home / 89,666.32-134,530.62-39,781.45

Finding the Fourth Proportional to 89,666.32, 134,530.62 and 39,781.45

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Solution

The fourth proportional to 89,666.32, 134,530.62 and 39,781.45 is: 59,685.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,666.32 : 134,530.62 = 39,781.45 : x
  2. Step 2: Convert to fraction form
    89,666.32/134,530.62 = 39,781.45/x
  3. Step 3: Cross multiply
    89,666.32x = 134,530.62 × 39,781.45
  4. Step 4: Simplify right side
    89,666.32x = 5,351,823,133.00
  5. Step 5: Solve for x
    x = 5,351,823,133.00/89,666.32
  6. Step 6: Final answer
    x = 59,685.99

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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.