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Finding the Fourth Proportional to 71,341.72, 98,446.15 and 39,509.93

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Solution

The fourth proportional to 71,341.72, 98,446.15 and 39,509.93 is: 54,520.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,341.72 : 98,446.15 = 39,509.93 : x
  2. Step 2: Convert to fraction form
    71,341.72/98,446.15 = 39,509.93/x
  3. Step 3: Cross multiply
    71,341.72x = 98,446.15 × 39,509.93
  4. Step 4: Simplify right side
    71,341.72x = 3,889,600,790.77
  5. Step 5: Solve for x
    x = 3,889,600,790.77/71,341.72
  6. Step 6: Final answer
    x = 54,520.71

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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.