Home / 79,475.02-109,616.54-74,715.64

Finding the Fourth Proportional to 79,475.02, 109,616.54 and 74,715.64

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Solution

The fourth proportional to 79,475.02, 109,616.54 and 74,715.64 is: 103,052.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,475.02 : 109,616.54 = 74,715.64 : x
  2. Step 2: Convert to fraction form
    79,475.02/109,616.54 = 74,715.64/x
  3. Step 3: Cross multiply
    79,475.02x = 109,616.54 × 74,715.64
  4. Step 4: Simplify right side
    79,475.02x = 8,190,069,940.69
  5. Step 5: Solve for x
    x = 8,190,069,940.69/79,475.02
  6. Step 6: Final answer
    x = 103,052.13

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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.