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Finding the Fourth Proportional to 72,462.30, 100,025.18 and 42,257.09

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Solution

The fourth proportional to 72,462.30, 100,025.18 and 42,257.09 is: 58,330.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,462.30 : 100,025.18 = 42,257.09 : x
  2. Step 2: Convert to fraction form
    72,462.30/100,025.18 = 42,257.09/x
  3. Step 3: Cross multiply
    72,462.30x = 100,025.18 × 42,257.09
  4. Step 4: Simplify right side
    72,462.30x = 4,226,773,230.77
  5. Step 5: Solve for x
    x = 4,226,773,230.77/72,462.30
  6. Step 6: Final answer
    x = 58,330.66

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1.5x scale

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.