Home / 72,021.20-99,349.32-42,207.44

Finding the Fourth Proportional to 72,021.20, 99,349.32 and 42,207.44

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Solution

The fourth proportional to 72,021.20, 99,349.32 and 42,207.44 is: 58,222.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,021.20 : 99,349.32 = 42,207.44 : x
  2. Step 2: Convert to fraction form
    72,021.20/99,349.32 = 42,207.44/x
  3. Step 3: Cross multiply
    72,021.20x = 99,349.32 × 42,207.44
  4. Step 4: Simplify right side
    72,021.20x = 4,193,280,462.94
  5. Step 5: Solve for x
    x = 4,193,280,462.94/72,021.20
  6. Step 6: Final answer
    x = 58,222.86

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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.