Home / 78,331.12-117,513.96-25,738.36

Finding the Fourth Proportional to 78,331.12, 117,513.96 and 25,738.36

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Solution

The fourth proportional to 78,331.12, 117,513.96 and 25,738.36 is: 38,613.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,331.12 : 117,513.96 = 25,738.36 : x
  2. Step 2: Convert to fraction form
    78,331.12/117,513.96 = 25,738.36/x
  3. Step 3: Cross multiply
    78,331.12x = 117,513.96 × 25,738.36
  4. Step 4: Simplify right side
    78,331.12x = 3,024,616,607.51
  5. Step 5: Solve for x
    x = 3,024,616,607.51/78,331.12
  6. Step 6: Final answer
    x = 38,613.22

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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.