Home / 71,210.17-98,270.69-39,379.60

Finding the Fourth Proportional to 71,210.17, 98,270.69 and 39,379.60

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Solution

The fourth proportional to 71,210.17, 98,270.69 and 39,379.60 is: 54,344.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,210.17 : 98,270.69 = 39,379.60 : x
  2. Step 2: Convert to fraction form
    71,210.17/98,270.69 = 39,379.60/x
  3. Step 3: Cross multiply
    71,210.17x = 98,270.69 × 39,379.60
  4. Step 4: Simplify right side
    71,210.17x = 3,869,860,389.86
  5. Step 5: Solve for x
    x = 3,869,860,389.86/71,210.17
  6. Step 6: Final answer
    x = 54,344.21

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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.