Home / 79,423.16-109,548.64-67,403.72

Finding the Fourth Proportional to 79,423.16, 109,548.64 and 67,403.72

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Solution

The fourth proportional to 79,423.16, 109,548.64 and 67,403.72 is: 92,970.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,423.16 : 109,548.64 = 67,403.72 : x
  2. Step 2: Convert to fraction form
    79,423.16/109,548.64 = 67,403.72/x
  3. Step 3: Cross multiply
    79,423.16x = 109,548.64 × 67,403.72
  4. Step 4: Simplify right side
    79,423.16x = 7,383,985,140.69
  5. Step 5: Solve for x
    x = 7,383,985,140.69/79,423.16
  6. Step 6: Final answer
    x = 92,970.18

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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.