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Finding the Fourth Proportional to 79,202.90, 109,300.08 and 42,904.43

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Solution

The fourth proportional to 79,202.90, 109,300.08 and 42,904.43 is: 59,208.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,202.90 : 109,300.08 = 42,904.43 : x
  2. Step 2: Convert to fraction form
    79,202.90/109,300.08 = 42,904.43/x
  3. Step 3: Cross multiply
    79,202.90x = 109,300.08 × 42,904.43
  4. Step 4: Simplify right side
    79,202.90x = 4,689,457,084.85
  5. Step 5: Solve for x
    x = 4,689,457,084.85/79,202.90
  6. Step 6: Final answer
    x = 59,208.15

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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.