Home / 57,479.36-79,315.27-31,981.70

Finding the Fourth Proportional to 57,479.36, 79,315.27 and 31,981.70

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Solution

The fourth proportional to 57,479.36, 79,315.27 and 31,981.70 is: 44,131.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,479.36 : 79,315.27 = 31,981.70 : x
  2. Step 2: Convert to fraction form
    57,479.36/79,315.27 = 31,981.70/x
  3. Step 3: Cross multiply
    57,479.36x = 79,315.27 × 31,981.70
  4. Step 4: Simplify right side
    57,479.36x = 2,536,637,288.89
  5. Step 5: Solve for x
    x = 2,536,637,288.89/57,479.36
  6. Step 6: Final answer
    x = 44,131.28

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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.