Home / 71,722.43-98,964.93-39,887.07

Finding the Fourth Proportional to 71,722.43, 98,964.93 and 39,887.07

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Solution

The fourth proportional to 71,722.43, 98,964.93 and 39,887.07 is: 55,037.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,722.43 : 98,964.93 = 39,887.07 : x
  2. Step 2: Convert to fraction form
    71,722.43/98,964.93 = 39,887.07/x
  3. Step 3: Cross multiply
    71,722.43x = 98,964.93 × 39,887.07
  4. Step 4: Simplify right side
    71,722.43x = 3,947,421,090.46
  5. Step 5: Solve for x
    x = 3,947,421,090.46/71,722.43
  6. Step 6: Final answer
    x = 55,037.47

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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.