Home / 78,319.54-117,331.35-60,703.12

Finding the Fourth Proportional to 78,319.54, 117,331.35 and 60,703.12

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Solution

The fourth proportional to 78,319.54, 117,331.35 and 60,703.12 is: 90,940.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,319.54 : 117,331.35 = 60,703.12 : x
  2. Step 2: Convert to fraction form
    78,319.54/117,331.35 = 60,703.12/x
  3. Step 3: Cross multiply
    78,319.54x = 117,331.35 × 60,703.12
  4. Step 4: Simplify right side
    78,319.54x = 7,122,379,018.81
  5. Step 5: Solve for x
    x = 7,122,379,018.81/78,319.54
  6. Step 6: Final answer
    x = 90,940.00

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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.