Home / 77,867.07-107,224.73-72,215.43

Finding the Fourth Proportional to 77,867.07, 107,224.73 and 72,215.43

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Solution

The fourth proportional to 77,867.07, 107,224.73 and 72,215.43 is: 99,442.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,867.07 : 107,224.73 = 72,215.43 : x
  2. Step 2: Convert to fraction form
    77,867.07/107,224.73 = 72,215.43/x
  3. Step 3: Cross multiply
    77,867.07x = 107,224.73 × 72,215.43
  4. Step 4: Simplify right side
    77,867.07x = 7,743,280,094.36
  5. Step 5: Solve for x
    x = 7,743,280,094.36/77,867.07
  6. Step 6: Final answer
    x = 99,442.29

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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.