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Finding the Fourth Proportional to 79,283.13, 109,410.75 and 43,472.40

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Solution

The fourth proportional to 79,283.13, 109,410.75 and 43,472.40 is: 59,991.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,283.13 : 109,410.75 = 43,472.40 : x
  2. Step 2: Convert to fraction form
    79,283.13/109,410.75 = 43,472.40/x
  3. Step 3: Cross multiply
    79,283.13x = 109,410.75 × 43,472.40
  4. Step 4: Simplify right side
    79,283.13x = 4,756,347,888.30
  5. Step 5: Solve for x
    x = 4,756,347,888.30/79,283.13
  6. Step 6: Final answer
    x = 59,991.93

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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.