Home / 90,908.61-136,381.41-38,318.01

Finding the Fourth Proportional to 90,908.61, 136,381.41 and 38,318.01

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Solution

The fourth proportional to 90,908.61, 136,381.41 and 38,318.01 is: 57,484.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,908.61 : 136,381.41 = 38,318.01 : x
  2. Step 2: Convert to fraction form
    90,908.61/136,381.41 = 38,318.01/x
  3. Step 3: Cross multiply
    90,908.61x = 136,381.41 × 38,318.01
  4. Step 4: Simplify right side
    90,908.61x = 5,225,864,232.19
  5. Step 5: Solve for x
    x = 5,225,864,232.19/90,908.61
  6. Step 6: Final answer
    x = 57,484.81

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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.