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Finding the Fourth Proportional to 67,298.56, 92,865.67 and 39,698.92

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Solution

The fourth proportional to 67,298.56, 92,865.67 and 39,698.92 is: 54,780.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,298.56 : 92,865.67 = 39,698.92 : x
  2. Step 2: Convert to fraction form
    67,298.56/92,865.67 = 39,698.92/x
  3. Step 3: Cross multiply
    67,298.56x = 92,865.67 × 39,698.92
  4. Step 4: Simplify right side
    67,298.56x = 3,686,666,704.83
  5. Step 5: Solve for x
    x = 3,686,666,704.83/67,298.56
  6. Step 6: Final answer
    x = 54,780.77

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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.