Home / 71,109.20-98,130.08-39,280.32

Finding the Fourth Proportional to 71,109.20, 98,130.08 and 39,280.32

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Solution

The fourth proportional to 71,109.20, 98,130.08 and 39,280.32 is: 54,206.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,109.20 : 98,130.08 = 39,280.32 : x
  2. Step 2: Convert to fraction form
    71,109.20/98,130.08 = 39,280.32/x
  3. Step 3: Cross multiply
    71,109.20x = 98,130.08 × 39,280.32
  4. Step 4: Simplify right side
    71,109.20x = 3,854,580,944.03
  5. Step 5: Solve for x
    x = 3,854,580,944.03/71,109.20
  6. Step 6: Final answer
    x = 54,206.50

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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.