Home / 51,721.04-71,331.72-31,814.48

Finding the Fourth Proportional to 51,721.04, 71,331.72 and 31,814.48

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Solution

The fourth proportional to 51,721.04, 71,331.72 and 31,814.48 is: 43,877.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,721.04 : 71,331.72 = 31,814.48 : x
  2. Step 2: Convert to fraction form
    51,721.04/71,331.72 = 31,814.48/x
  3. Step 3: Cross multiply
    51,721.04x = 71,331.72 × 31,814.48
  4. Step 4: Simplify right side
    51,721.04x = 2,269,381,579.31
  5. Step 5: Solve for x
    x = 2,269,381,579.31/51,721.04
  6. Step 6: Final answer
    x = 43,877.34

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1.5x scale

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.