Home / 89,665.32-134,529.12-39,780.45

Finding the Fourth Proportional to 89,665.32, 134,529.12 and 39,780.45

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Solution

The fourth proportional to 89,665.32, 134,529.12 and 39,780.45 is: 59,684.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,665.32 : 134,529.12 = 39,780.45 : x
  2. Step 2: Convert to fraction form
    89,665.32/134,529.12 = 39,780.45/x
  3. Step 3: Cross multiply
    89,665.32x = 134,529.12 × 39,780.45
  4. Step 4: Simplify right side
    89,665.32x = 5,351,628,278.04
  5. Step 5: Solve for x
    x = 5,351,628,278.04/89,665.32
  6. Step 6: Final answer
    x = 59,684.48

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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.