Home / 78,840.32-108,800.96-45,313.92

Finding the Fourth Proportional to 78,840.32, 108,800.96 and 45,313.92

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Solution

The fourth proportional to 78,840.32, 108,800.96 and 45,313.92 is: 62,533.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,840.32 : 108,800.96 = 45,313.92 : x
  2. Step 2: Convert to fraction form
    78,840.32/108,800.96 = 45,313.92/x
  3. Step 3: Cross multiply
    78,840.32x = 108,800.96 × 45,313.92
  4. Step 4: Simplify right side
    78,840.32x = 4,930,197,997.36
  5. Step 5: Solve for x
    x = 4,930,197,997.36/78,840.32
  6. Step 6: Final answer
    x = 62,533.97

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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.