Home / 82,941.10-124,411.65-20,611.60

Finding the Fourth Proportional to 82,941.10, 124,411.65 and 20,611.60

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Solution

The fourth proportional to 82,941.10, 124,411.65 and 20,611.60 is: 30,917.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,941.10 : 124,411.65 = 20,611.60 : x
  2. Step 2: Convert to fraction form
    82,941.10/124,411.65 = 20,611.60/x
  3. Step 3: Cross multiply
    82,941.10x = 124,411.65 × 20,611.60
  4. Step 4: Simplify right side
    82,941.10x = 2,564,323,165.14
  5. Step 5: Solve for x
    x = 2,564,323,165.14/82,941.10
  6. Step 6: Final answer
    x = 30,917.40

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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.