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Finding the Fourth Proportional to 79,701.08, 109,990.88 and 45,719.15

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Solution

The fourth proportional to 79,701.08, 109,990.88 and 45,719.15 is: 63,094.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,701.08 : 109,990.88 = 45,719.15 : x
  2. Step 2: Convert to fraction form
    79,701.08/109,990.88 = 45,719.15/x
  3. Step 3: Cross multiply
    79,701.08x = 109,990.88 × 45,719.15
  4. Step 4: Simplify right side
    79,701.08x = 5,028,688,762.80
  5. Step 5: Solve for x
    x = 5,028,688,762.80/79,701.08
  6. Step 6: Final answer
    x = 63,094.37

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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.