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Finding the Fourth Proportional to 82,930.80, 124,444.80 and 30,345.60

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Solution

The fourth proportional to 82,930.80, 124,444.80 and 30,345.60 is: 45,536.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,930.80 : 124,444.80 = 30,345.60 : x
  2. Step 2: Convert to fraction form
    82,930.80/124,444.80 = 30,345.60/x
  3. Step 3: Cross multiply
    82,930.80x = 124,444.80 × 30,345.60
  4. Step 4: Simplify right side
    82,930.80x = 3,776,352,122.88
  5. Step 5: Solve for x
    x = 3,776,352,122.88/82,930.80
  6. Step 6: Final answer
    x = 45,536.18

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1.5x scale

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.