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Finding the Fourth Proportional to 71,477.92, 98,643.72 and 39,650.32

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Solution

The fourth proportional to 71,477.92, 98,643.72 and 39,650.32 is: 54,719.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,477.92 : 98,643.72 = 39,650.32 : x
  2. Step 2: Convert to fraction form
    71,477.92/98,643.72 = 39,650.32/x
  3. Step 3: Cross multiply
    71,477.92x = 98,643.72 × 39,650.32
  4. Step 4: Simplify right side
    71,477.92x = 3,911,255,063.99
  5. Step 5: Solve for x
    x = 3,911,255,063.99/71,477.92
  6. Step 6: Final answer
    x = 54,719.77

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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.