Home / 71,220.60-98,285.58-39,389.58

Finding the Fourth Proportional to 71,220.60, 98,285.58 and 39,389.58

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Solution

The fourth proportional to 71,220.60, 98,285.58 and 39,389.58 is: 54,358.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,220.60 : 98,285.58 = 39,389.58 : x
  2. Step 2: Convert to fraction form
    71,220.60/98,285.58 = 39,389.58/x
  3. Step 3: Cross multiply
    71,220.60x = 98,285.58 × 39,389.58
  4. Step 4: Simplify right side
    71,220.60x = 3,871,427,716.26
  5. Step 5: Solve for x
    x = 3,871,427,716.26/71,220.60
  6. Step 6: Final answer
    x = 54,358.26

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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.