Home / 77,014.19-106,221.07-66,276.93

Finding the Fourth Proportional to 77,014.19, 106,221.07 and 66,276.93

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Solution

The fourth proportional to 77,014.19, 106,221.07 and 66,276.93 is: 91,411.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,014.19 : 106,221.07 = 66,276.93 : x
  2. Step 2: Convert to fraction form
    77,014.19/106,221.07 = 66,276.93/x
  3. Step 3: Cross multiply
    77,014.19x = 106,221.07 × 66,276.93
  4. Step 4: Simplify right side
    77,014.19x = 7,040,006,902.09
  5. Step 5: Solve for x
    x = 7,040,006,902.09/77,014.19
  6. Step 6: Final answer
    x = 91,411.81

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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.