Home / 78,120.97-107,800.47-45,852.12

Finding the Fourth Proportional to 78,120.97, 107,800.47 and 45,852.12

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Solution

The fourth proportional to 78,120.97, 107,800.47 and 45,852.12 is: 63,272.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,120.97 : 107,800.47 = 45,852.12 : x
  2. Step 2: Convert to fraction form
    78,120.97/107,800.47 = 45,852.12/x
  3. Step 3: Cross multiply
    78,120.97x = 107,800.47 × 45,852.12
  4. Step 4: Simplify right side
    78,120.97x = 4,942,880,086.50
  5. Step 5: Solve for x
    x = 4,942,880,086.50/78,120.97
  6. Step 6: Final answer
    x = 63,272.13

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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.