Home / 81,070.10-121,605.56-36,644.84

Finding the Fourth Proportional to 81,070.10, 121,605.56 and 36,644.84

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Solution

The fourth proportional to 81,070.10, 121,605.56 and 36,644.84 is: 54,967.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,070.10 : 121,605.56 = 36,644.84 : x
  2. Step 2: Convert to fraction form
    81,070.10/121,605.56 = 36,644.84/x
  3. Step 3: Cross multiply
    81,070.10x = 121,605.56 × 36,644.84
  4. Step 4: Simplify right side
    81,070.10x = 4,456,216,106.09
  5. Step 5: Solve for x
    x = 4,456,216,106.09/81,070.10
  6. Step 6: Final answer
    x = 54,967.44

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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.