Home / 78,431.32-108,263.80-48,257.12

Finding the Fourth Proportional to 78,431.32, 108,263.80 and 48,257.12

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Solution

The fourth proportional to 78,431.32, 108,263.80 and 48,257.12 is: 66,612.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,431.32 : 108,263.80 = 48,257.12 : x
  2. Step 2: Convert to fraction form
    78,431.32/108,263.80 = 48,257.12/x
  3. Step 3: Cross multiply
    78,431.32x = 108,263.80 × 48,257.12
  4. Step 4: Simplify right side
    78,431.32x = 5,224,499,188.26
  5. Step 5: Solve for x
    x = 5,224,499,188.26/78,431.32
  6. Step 6: Final answer
    x = 66,612.41

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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.