Home / 71,111.40-98,134.62-39,280.32

Finding the Fourth Proportional to 71,111.40, 98,134.62 and 39,280.32

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Solution

The fourth proportional to 71,111.40, 98,134.62 and 39,280.32 is: 54,207.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,111.40 : 98,134.62 = 39,280.32 : x
  2. Step 2: Convert to fraction form
    71,111.40/98,134.62 = 39,280.32/x
  3. Step 3: Cross multiply
    71,111.40x = 98,134.62 × 39,280.32
  4. Step 4: Simplify right side
    71,111.40x = 3,854,759,276.68
  5. Step 5: Solve for x
    x = 3,854,759,276.68/71,111.40
  6. Step 6: Final answer
    x = 54,207.33

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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.