Home / 57,005,033.08-78,667,953.42-30,900,417.88

Finding the Fourth Proportional to 57,005,033.08, 78,667,953.42 and 30,900,417.88

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Solution

The fourth proportional to 57,005,033.08, 78,667,953.42 and 30,900,417.88 is: 42,643,122.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,005,033.08 : 78,667,953.42 = 30,900,417.88 : x
  2. Step 2: Convert to fraction form
    57,005,033.08/78,667,953.42 = 30,900,417.88/x
  3. Step 3: Cross multiply
    57,005,033.08x = 78,667,953.42 × 30,900,417.88
  4. Step 4: Simplify right side
    57,005,033.08x = 2,430,872,634,442,375
  5. Step 5: Solve for x
    x = 2,430,872,634,442,375/57,005,033.08
  6. Step 6: Final answer
    x = 42,643,122.95

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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.