Home / 81,331.60-121,867.80-60,336.40

Finding the Fourth Proportional to 81,331.60, 121,867.80 and 60,336.40

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Solution

The fourth proportional to 81,331.60, 121,867.80 and 60,336.40 is: 90,408.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,331.60 : 121,867.80 = 60,336.40 : x
  2. Step 2: Convert to fraction form
    81,331.60/121,867.80 = 60,336.40/x
  3. Step 3: Cross multiply
    81,331.60x = 121,867.80 × 60,336.40
  4. Step 4: Simplify right side
    81,331.60x = 7,353,064,327.92
  5. Step 5: Solve for x
    x = 7,353,064,327.92/81,331.60
  6. Step 6: Final answer
    x = 90,408.46

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1.5x scale

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.