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Finding the Fourth Proportional to 79,703.55, 109,990.71 and 43,893.63

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Solution

The fourth proportional to 79,703.55, 109,990.71 and 43,893.63 is: 60,573.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,703.55 : 109,990.71 = 43,893.63 : x
  2. Step 2: Convert to fraction form
    79,703.55/109,990.71 = 43,893.63/x
  3. Step 3: Cross multiply
    79,703.55x = 109,990.71 × 43,893.63
  4. Step 4: Simplify right side
    79,703.55x = 4,827,891,528.18
  5. Step 5: Solve for x
    x = 4,827,891,528.18/79,703.55
  6. Step 6: Final answer
    x = 60,573.11

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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.