Home / 70,535.79-105,810.50-20,614.75

Finding the Fourth Proportional to 70,535.79, 105,810.50 and 20,614.75

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Solution

The fourth proportional to 70,535.79, 105,810.50 and 20,614.75 is: 30,924.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,535.79 : 105,810.50 = 20,614.75 : x
  2. Step 2: Convert to fraction form
    70,535.79/105,810.50 = 20,614.75/x
  3. Step 3: Cross multiply
    70,535.79x = 105,810.50 × 20,614.75
  4. Step 4: Simplify right side
    70,535.79x = 2,181,256,791.89
  5. Step 5: Solve for x
    x = 2,181,256,791.89/70,535.79
  6. Step 6: Final answer
    x = 30,924.11

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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.