Home / 53,869.32-81,128.13-47,706.84

Finding the Fourth Proportional to 53,869.32, 81,128.13 and 47,706.84

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Solution

The fourth proportional to 53,869.32, 81,128.13 and 47,706.84 is: 71,847.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,869.32 : 81,128.13 = 47,706.84 : x
  2. Step 2: Convert to fraction form
    53,869.32/81,128.13 = 47,706.84/x
  3. Step 3: Cross multiply
    53,869.32x = 81,128.13 × 47,706.84
  4. Step 4: Simplify right side
    53,869.32x = 3,870,366,717.41
  5. Step 5: Solve for x
    x = 3,870,366,717.41/53,869.32
  6. Step 6: Final answer
    x = 71,847.33

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.