Home / 91,343.28-136,670.38-53,923.70

Finding the Fourth Proportional to 91,343.28, 136,670.38 and 53,923.70

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Solution

The fourth proportional to 91,343.28, 136,670.38 and 53,923.70 is: 80,682.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,343.28 : 136,670.38 = 53,923.70 : x
  2. Step 2: Convert to fraction form
    91,343.28/136,670.38 = 53,923.70/x
  3. Step 3: Cross multiply
    91,343.28x = 136,670.38 × 53,923.70
  4. Step 4: Simplify right side
    91,343.28x = 7,369,772,570.01
  5. Step 5: Solve for x
    x = 7,369,772,570.01/91,343.28
  6. Step 6: Final answer
    x = 80,682.15

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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.