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Finding the Fourth Proportional to 79,615.76, 109,868.58 and 43,317.77

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Solution

The fourth proportional to 79,615.76, 109,868.58 and 43,317.77 is: 59,777.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,615.76 : 109,868.58 = 43,317.77 : x
  2. Step 2: Convert to fraction form
    79,615.76/109,868.58 = 43,317.77/x
  3. Step 3: Cross multiply
    79,615.76x = 109,868.58 × 43,317.77
  4. Step 4: Simplify right side
    79,615.76x = 4,759,261,329.32
  5. Step 5: Solve for x
    x = 4,759,261,329.32/79,615.76
  6. Step 6: Final answer
    x = 59,777.88

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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.