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Finding the Fourth Proportional to 79,208.29, 109,307.41 and 47,384.67

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Solution

The fourth proportional to 79,208.29, 109,307.41 and 47,384.67 is: 65,390.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,208.29 : 109,307.41 = 47,384.67 : x
  2. Step 2: Convert to fraction form
    79,208.29/109,307.41 = 47,384.67/x
  3. Step 3: Cross multiply
    79,208.29x = 109,307.41 × 47,384.67
  4. Step 4: Simplify right side
    79,208.29x = 5,179,495,551.40
  5. Step 5: Solve for x
    x = 5,179,495,551.40/79,208.29
  6. Step 6: Final answer
    x = 65,390.83

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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.