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Finding the Fourth Proportional to 79,476.97, 109,677.90 and 45,485.30

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Solution

The fourth proportional to 79,476.97, 109,677.90 and 45,485.30 is: 62,769.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,476.97 : 109,677.90 = 45,485.30 : x
  2. Step 2: Convert to fraction form
    79,476.97/109,677.90 = 45,485.30/x
  3. Step 3: Cross multiply
    79,476.97x = 109,677.90 × 45,485.30
  4. Step 4: Simplify right side
    79,476.97x = 4,988,731,756.84
  5. Step 5: Solve for x
    x = 4,988,731,756.84/79,476.97
  6. Step 6: Final answer
    x = 62,769.52

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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.