Home / 71,115.47-98,130.69-39,284.60

Finding the Fourth Proportional to 71,115.47, 98,130.69 and 39,284.60

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Solution

The fourth proportional to 71,115.47, 98,130.69 and 39,284.60 is: 54,207.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,115.47 : 98,130.69 = 39,284.60 : x
  2. Step 2: Convert to fraction form
    71,115.47/98,130.69 = 39,284.60/x
  3. Step 3: Cross multiply
    71,115.47x = 98,130.69 × 39,284.60
  4. Step 4: Simplify right side
    71,115.47x = 3,855,024,413.72
  5. Step 5: Solve for x
    x = 3,855,024,413.72/71,115.47
  6. Step 6: Final answer
    x = 54,207.96

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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.