Home / 71,220.36-98,284.68-39,389.88

Finding the Fourth Proportional to 71,220.36, 98,284.68 and 39,389.88

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Solution

The fourth proportional to 71,220.36, 98,284.68 and 39,389.88 is: 54,358.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,220.36 : 98,284.68 = 39,389.88 : x
  2. Step 2: Convert to fraction form
    71,220.36/98,284.68 = 39,389.88/x
  3. Step 3: Cross multiply
    71,220.36x = 98,284.68 × 39,389.88
  4. Step 4: Simplify right side
    71,220.36x = 3,871,421,751.04
  5. Step 5: Solve for x
    x = 3,871,421,751.04/71,220.36
  6. Step 6: Final answer
    x = 54,358.36

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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.