Home / 57,005,035.08-78,667,956.18-30,900,419.88

Finding the Fourth Proportional to 57,005,035.08, 78,667,956.18 and 30,900,419.88

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Solution

The fourth proportional to 57,005,035.08, 78,667,956.18 and 30,900,419.88 is: 42,643,125.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,005,035.08 : 78,667,956.18 = 30,900,419.88 : x
  2. Step 2: Convert to fraction form
    57,005,035.08/78,667,956.18 = 30,900,419.88/x
  3. Step 3: Cross multiply
    57,005,035.08x = 78,667,956.18 × 30,900,419.88
  4. Step 4: Simplify right side
    57,005,035.08x = 2,430,872,877,063,441
  5. Step 5: Solve for x
    x = 2,430,872,877,063,441/57,005,035.08
  6. Step 6: Final answer
    x = 42,643,125.71

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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.