Home / 71,518.05-98,699.57-39,686.99

Finding the Fourth Proportional to 71,518.05, 98,699.57 and 39,686.99

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Solution

The fourth proportional to 71,518.05, 98,699.57 and 39,686.99 is: 54,770.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,518.05 : 98,699.57 = 39,686.99 : x
  2. Step 2: Convert to fraction form
    71,518.05/98,699.57 = 39,686.99/x
  3. Step 3: Cross multiply
    71,518.05x = 98,699.57 × 39,686.99
  4. Step 4: Simplify right side
    71,518.05x = 3,917,088,155.66
  5. Step 5: Solve for x
    x = 3,917,088,155.66/71,518.05
  6. Step 6: Final answer
    x = 54,770.62

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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.