Home / 68,429.19-94,431.34-39,765.05

Finding the Fourth Proportional to 68,429.19, 94,431.34 and 39,765.05

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Solution

The fourth proportional to 68,429.19, 94,431.34 and 39,765.05 is: 54,875.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,429.19 : 94,431.34 = 39,765.05 : x
  2. Step 2: Convert to fraction form
    68,429.19/94,431.34 = 39,765.05/x
  3. Step 3: Cross multiply
    68,429.19x = 94,431.34 × 39,765.05
  4. Step 4: Simplify right side
    68,429.19x = 3,755,066,739.22
  5. Step 5: Solve for x
    x = 3,755,066,739.22/68,429.19
  6. Step 6: Final answer
    x = 54,875.22

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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.