Home / 76,431.12-113,871.86-72,666.84

Finding the Fourth Proportional to 76,431.12, 113,871.86 and 72,666.84

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Solution

The fourth proportional to 76,431.12, 113,871.86 and 72,666.84 is: 108,263.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,431.12 : 113,871.86 = 72,666.84 : x
  2. Step 2: Convert to fraction form
    76,431.12/113,871.86 = 72,666.84/x
  3. Step 3: Cross multiply
    76,431.12x = 113,871.86 × 72,666.84
  4. Step 4: Simplify right side
    76,431.12x = 8,274,708,231.12
  5. Step 5: Solve for x
    x = 8,274,708,231.12/76,431.12
  6. Step 6: Final answer
    x = 108,263.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.