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Finding the Fourth Proportional to 71,650.94, 98,877.58 and 39,819.20

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Solution

The fourth proportional to 71,650.94, 98,877.58 and 39,819.20 is: 54,950.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,650.94 : 98,877.58 = 39,819.20 : x
  2. Step 2: Convert to fraction form
    71,650.94/98,877.58 = 39,819.20/x
  3. Step 3: Cross multiply
    71,650.94x = 98,877.58 × 39,819.20
  4. Step 4: Simplify right side
    71,650.94x = 3,937,225,539.60
  5. Step 5: Solve for x
    x = 3,937,225,539.60/71,650.94
  6. Step 6: Final answer
    x = 54,950.09

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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.