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Finding the Fourth Proportional to 79,336.56, 109,469.16 and 51,038.40

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Solution

The fourth proportional to 79,336.56, 109,469.16 and 51,038.40 is: 70,423.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,336.56 : 109,469.16 = 51,038.40 : x
  2. Step 2: Convert to fraction form
    79,336.56/109,469.16 = 51,038.40/x
  3. Step 3: Cross multiply
    79,336.56x = 109,469.16 × 51,038.40
  4. Step 4: Simplify right side
    79,336.56x = 5,587,130,775.74
  5. Step 5: Solve for x
    x = 5,587,130,775.74/79,336.56
  6. Step 6: Final answer
    x = 70,423.15

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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.