Home / 82,042.40-122,981.60-70,752.02

Finding the Fourth Proportional to 82,042.40, 122,981.60 and 70,752.02

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Solution

The fourth proportional to 82,042.40, 122,981.60 and 70,752.02 is: 106,057.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,042.40 : 122,981.60 = 70,752.02 : x
  2. Step 2: Convert to fraction form
    82,042.40/122,981.60 = 70,752.02/x
  3. Step 3: Cross multiply
    82,042.40x = 122,981.60 × 70,752.02
  4. Step 4: Simplify right side
    82,042.40x = 8,701,196,622.83
  5. Step 5: Solve for x
    x = 8,701,196,622.83/82,042.40
  6. Step 6: Final answer
    x = 106,057.31

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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.