Home / 78,022.02-107,682.45-51,242.22

Finding the Fourth Proportional to 78,022.02, 107,682.45 and 51,242.22

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Solution

The fourth proportional to 78,022.02, 107,682.45 and 51,242.22 is: 70,722.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,022.02 : 107,682.45 = 51,242.22 : x
  2. Step 2: Convert to fraction form
    78,022.02/107,682.45 = 51,242.22/x
  3. Step 3: Cross multiply
    78,022.02x = 107,682.45 × 51,242.22
  4. Step 4: Simplify right side
    78,022.02x = 5,517,887,793.04
  5. Step 5: Solve for x
    x = 5,517,887,793.04/78,022.02
  6. Step 6: Final answer
    x = 70,722.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.