Home / 78,331.52-108,153.66-48,157.32

Finding the Fourth Proportional to 78,331.52, 108,153.66 and 48,157.32

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Solution

The fourth proportional to 78,331.52, 108,153.66 and 48,157.32 is: 66,491.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,331.52 : 108,153.66 = 48,157.32 : x
  2. Step 2: Convert to fraction form
    78,331.52/108,153.66 = 48,157.32/x
  3. Step 3: Cross multiply
    78,331.52x = 108,153.66 × 48,157.32
  4. Step 4: Simplify right side
    78,331.52x = 5,208,390,413.79
  5. Step 5: Solve for x
    x = 5,208,390,413.79/78,331.52
  6. Step 6: Final answer
    x = 66,491.63

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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.