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Finding the Fourth Proportional to 82,953.68, 124,430.43 and 20,624.18

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Solution

The fourth proportional to 82,953.68, 124,430.43 and 20,624.18 is: 30,936.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,953.68 : 124,430.43 = 20,624.18 : x
  2. Step 2: Convert to fraction form
    82,953.68/124,430.43 = 20,624.18/x
  3. Step 3: Cross multiply
    82,953.68x = 124,430.43 × 20,624.18
  4. Step 4: Simplify right side
    82,953.68x = 2,566,275,585.80
  5. Step 5: Solve for x
    x = 2,566,275,585.80/82,953.68
  6. Step 6: Final answer
    x = 30,936.25

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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.