Home / 71,681.16-98,918.22-39,849.84

Finding the Fourth Proportional to 71,681.16, 98,918.22 and 39,849.84

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Solution

The fourth proportional to 71,681.16, 98,918.22 and 39,849.84 is: 54,991.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,681.16 : 98,918.22 = 39,849.84 : x
  2. Step 2: Convert to fraction form
    71,681.16/98,918.22 = 39,849.84/x
  3. Step 3: Cross multiply
    71,681.16x = 98,918.22 × 39,849.84
  4. Step 4: Simplify right side
    71,681.16x = 3,941,875,240.08
  5. Step 5: Solve for x
    x = 3,941,875,240.08/71,681.16
  6. Step 6: Final answer
    x = 54,991.79

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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.