Home / 57,005,037.08-78,667,958.94-30,900,421.88

Finding the Fourth Proportional to 57,005,037.08, 78,667,958.94 and 30,900,421.88

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Solution

The fourth proportional to 57,005,037.08, 78,667,958.94 and 30,900,421.88 is: 42,643,128.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,005,037.08 : 78,667,958.94 = 30,900,421.88 : x
  2. Step 2: Convert to fraction form
    57,005,037.08/78,667,958.94 = 30,900,421.88/x
  3. Step 3: Cross multiply
    57,005,037.08x = 78,667,958.94 × 30,900,421.88
  4. Step 4: Simplify right side
    57,005,037.08x = 2,430,873,119,684,517.50
  5. Step 5: Solve for x
    x = 2,430,873,119,684,517.50/57,005,037.08
  6. Step 6: Final answer
    x = 42,643,128.47

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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.