Home / 65,985.65-91,057.98-39,112.21

Finding the Fourth Proportional to 65,985.65, 91,057.98 and 39,112.21

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Solution

The fourth proportional to 65,985.65, 91,057.98 and 39,112.21 is: 53,973.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,985.65 : 91,057.98 = 39,112.21 : x
  2. Step 2: Convert to fraction form
    65,985.65/91,057.98 = 39,112.21/x
  3. Step 3: Cross multiply
    65,985.65x = 91,057.98 × 39,112.21
  4. Step 4: Simplify right side
    65,985.65x = 3,561,478,364.22
  5. Step 5: Solve for x
    x = 3,561,478,364.22/65,985.65
  6. Step 6: Final answer
    x = 53,973.53

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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.