Home / 92,821.45-128,198.01-62,731.03

Finding the Fourth Proportional to 92,821.45, 128,198.01 and 62,731.03

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Solution

The fourth proportional to 92,821.45, 128,198.01 and 62,731.03 is: 86,639.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,821.45 : 128,198.01 = 62,731.03 : x
  2. Step 2: Convert to fraction form
    92,821.45/128,198.01 = 62,731.03/x
  3. Step 3: Cross multiply
    92,821.45x = 128,198.01 × 62,731.03
  4. Step 4: Simplify right side
    92,821.45x = 8,041,993,211.25
  5. Step 5: Solve for x
    x = 8,041,993,211.25/92,821.45
  6. Step 6: Final answer
    x = 86,639.38

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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.