Home / 79,520.40-109,681.02-51,199.02

Finding the Fourth Proportional to 79,520.40, 109,681.02 and 51,199.02

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Solution

The fourth proportional to 79,520.40, 109,681.02 and 51,199.02 is: 70,617.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,520.40 : 109,681.02 = 51,199.02 : x
  2. Step 2: Convert to fraction form
    79,520.40/109,681.02 = 51,199.02/x
  3. Step 3: Cross multiply
    79,520.40x = 109,681.02 × 51,199.02
  4. Step 4: Simplify right side
    79,520.40x = 5,615,560,736.60
  5. Step 5: Solve for x
    x = 5,615,560,736.60/79,520.40
  6. Step 6: Final answer
    x = 70,617.86

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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.