Home / 40,870.84-61,275.19-21,136.82

Finding the Fourth Proportional to 40,870.84, 61,275.19 and 21,136.82

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Solution

The fourth proportional to 40,870.84, 61,275.19 and 21,136.82 is: 31,689.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,870.84 : 61,275.19 = 21,136.82 : x
  2. Step 2: Convert to fraction form
    40,870.84/61,275.19 = 21,136.82/x
  3. Step 3: Cross multiply
    40,870.84x = 61,275.19 × 21,136.82
  4. Step 4: Simplify right side
    40,870.84x = 1,295,162,661.50
  5. Step 5: Solve for x
    x = 1,295,162,661.50/40,870.84
  6. Step 6: Final answer
    x = 31,689.16

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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.