Home / 56,639.84-78,143.51-35,121.83

Finding the Fourth Proportional to 56,639.84, 78,143.51 and 35,121.83

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Solution

The fourth proportional to 56,639.84, 78,143.51 and 35,121.83 is: 48,456.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,639.84 : 78,143.51 = 35,121.83 : x
  2. Step 2: Convert to fraction form
    56,639.84/78,143.51 = 35,121.83/x
  3. Step 3: Cross multiply
    56,639.84x = 78,143.51 × 35,121.83
  4. Step 4: Simplify right side
    56,639.84x = 2,744,543,073.82
  5. Step 5: Solve for x
    x = 2,744,543,073.82/56,639.84
  6. Step 6: Final answer
    x = 48,456.05

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.