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Finding the Fourth Proportional to 67,660.80, 101,364.72 and 56,638.32

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Solution

The fourth proportional to 67,660.80, 101,364.72 and 56,638.32 is: 84,851.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,660.80 : 101,364.72 = 56,638.32 : x
  2. Step 2: Convert to fraction form
    67,660.80/101,364.72 = 56,638.32/x
  3. Step 3: Cross multiply
    67,660.80x = 101,364.72 × 56,638.32
  4. Step 4: Simplify right side
    67,660.80x = 5,741,127,448.07
  5. Step 5: Solve for x
    x = 5,741,127,448.07/67,660.80
  6. Step 6: Final answer
    x = 84,851.60

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.