Home / 78,319.61-117,331.45-60,703.19

Finding the Fourth Proportional to 78,319.61, 117,331.45 and 60,703.19

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Solution

The fourth proportional to 78,319.61, 117,331.45 and 60,703.19 is: 90,940.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,319.61 : 117,331.45 = 60,703.19 : x
  2. Step 2: Convert to fraction form
    78,319.61/117,331.45 = 60,703.19/x
  3. Step 3: Cross multiply
    78,319.61x = 117,331.45 × 60,703.19
  4. Step 4: Simplify right side
    78,319.61x = 7,122,392,412.15
  5. Step 5: Solve for x
    x = 7,122,392,412.15/78,319.61
  6. Step 6: Final answer
    x = 90,940.10

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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.