Home / 78,428.30-117,642.29-22,268.93

Finding the Fourth Proportional to 78,428.30, 117,642.29 and 22,268.93

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Solution

The fourth proportional to 78,428.30, 117,642.29 and 22,268.93 is: 33,403.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,428.30 : 117,642.29 = 22,268.93 : x
  2. Step 2: Convert to fraction form
    78,428.30/117,642.29 = 22,268.93/x
  3. Step 3: Cross multiply
    78,428.30x = 117,642.29 × 22,268.93
  4. Step 4: Simplify right side
    78,428.30x = 2,619,767,221.49
  5. Step 5: Solve for x
    x = 2,619,767,221.49/78,428.30
  6. Step 6: Final answer
    x = 33,403.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.