Home / 75,721.56-113,510.01-28,323.81

Finding the Fourth Proportional to 75,721.56, 113,510.01 and 28,323.81

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Solution

The fourth proportional to 75,721.56, 113,510.01 and 28,323.81 is: 42,458.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,721.56 : 113,510.01 = 28,323.81 : x
  2. Step 2: Convert to fraction form
    75,721.56/113,510.01 = 28,323.81/x
  3. Step 3: Cross multiply
    75,721.56x = 113,510.01 × 28,323.81
  4. Step 4: Simplify right side
    75,721.56x = 3,215,035,956.34
  5. Step 5: Solve for x
    x = 3,215,035,956.34/75,721.56
  6. Step 6: Final answer
    x = 42,458.66

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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.