Home / 69,999.18-96,595.38-39,780.51

Finding the Fourth Proportional to 69,999.18, 96,595.38 and 39,780.51

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Solution

The fourth proportional to 69,999.18, 96,595.38 and 39,780.51 is: 54,895.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,999.18 : 96,595.38 = 39,780.51 : x
  2. Step 2: Convert to fraction form
    69,999.18/96,595.38 = 39,780.51/x
  3. Step 3: Cross multiply
    69,999.18x = 96,595.38 × 39,780.51
  4. Step 4: Simplify right side
    69,999.18x = 3,842,613,480.04
  5. Step 5: Solve for x
    x = 3,842,613,480.04/69,999.18
  6. Step 6: Final answer
    x = 54,895.12

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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.