Home / 77,070.97-105,949.96-66,276.10

Finding the Fourth Proportional to 77,070.97, 105,949.96 and 66,276.10

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Solution

The fourth proportional to 77,070.97, 105,949.96 and 66,276.10 is: 91,110.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,070.97 : 105,949.96 = 66,276.10 : x
  2. Step 2: Convert to fraction form
    77,070.97/105,949.96 = 66,276.10/x
  3. Step 3: Cross multiply
    77,070.97x = 105,949.96 × 66,276.10
  4. Step 4: Simplify right side
    77,070.97x = 7,021,950,143.96
  5. Step 5: Solve for x
    x = 7,021,950,143.96/77,070.97
  6. Step 6: Final answer
    x = 91,110.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.