Home / 71,054.11-98,054.47-39,222.78

Finding the Fourth Proportional to 71,054.11, 98,054.47 and 39,222.78

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Solution

The fourth proportional to 71,054.11, 98,054.47 and 39,222.78 is: 54,127.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,054.11 : 98,054.47 = 39,222.78 : x
  2. Step 2: Convert to fraction form
    71,054.11/98,054.47 = 39,222.78/x
  3. Step 3: Cross multiply
    71,054.11x = 98,054.47 × 39,222.78
  4. Step 4: Simplify right side
    71,054.11x = 3,845,968,917.08
  5. Step 5: Solve for x
    x = 3,845,968,917.08/71,054.11
  6. Step 6: Final answer
    x = 54,127.32

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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.