Home / 82,970.68-124,455.75-20,641.18

Finding the Fourth Proportional to 82,970.68, 124,455.75 and 20,641.18

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Solution

The fourth proportional to 82,970.68, 124,455.75 and 20,641.18 is: 30,961.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,970.68 : 124,455.75 = 20,641.18 : x
  2. Step 2: Convert to fraction form
    82,970.68/124,455.75 = 20,641.18/x
  3. Step 3: Cross multiply
    82,970.68x = 124,455.75 × 20,641.18
  4. Step 4: Simplify right side
    82,970.68x = 2,568,913,537.79
  5. Step 5: Solve for x
    x = 2,568,913,537.79/82,970.68
  6. Step 6: Final answer
    x = 30,961.70

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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.