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Finding the Fourth Proportional to 71,598.99, 98,803.86 and 39,769.92

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Solution

The fourth proportional to 71,598.99, 98,803.86 and 39,769.92 is: 54,880.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,598.99 : 98,803.86 = 39,769.92 : x
  2. Step 2: Convert to fraction form
    71,598.99/98,803.86 = 39,769.92/x
  3. Step 3: Cross multiply
    71,598.99x = 98,803.86 × 39,769.92
  4. Step 4: Simplify right side
    71,598.99x = 3,929,421,607.89
  5. Step 5: Solve for x
    x = 3,929,421,607.89/71,598.99
  6. Step 6: Final answer
    x = 54,880.96

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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.