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Finding the Fourth Proportional to 79,277.77, 109,340.70 and 70,212.64

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Solution

The fourth proportional to 79,277.77, 109,340.70 and 70,212.64 is: 96,837.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,277.77 : 109,340.70 = 70,212.64 : x
  2. Step 2: Convert to fraction form
    79,277.77/109,340.70 = 70,212.64/x
  3. Step 3: Cross multiply
    79,277.77x = 109,340.70 × 70,212.64
  4. Step 4: Simplify right side
    79,277.77x = 7,677,099,206.45
  5. Step 5: Solve for x
    x = 7,677,099,206.45/79,277.77
  6. Step 6: Final answer
    x = 96,837.98

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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.