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Finding the Fourth Proportional to 30,497.75, 42,088.75 and 17,068.73

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Solution

The fourth proportional to 30,497.75, 42,088.75 and 17,068.73 is: 23,555.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,497.75 : 42,088.75 = 17,068.73 : x
  2. Step 2: Convert to fraction form
    30,497.75/42,088.75 = 17,068.73/x
  3. Step 3: Cross multiply
    30,497.75x = 42,088.75 × 17,068.73
  4. Step 4: Simplify right side
    30,497.75x = 718,401,509.79
  5. Step 5: Solve for x
    x = 718,401,509.79/30,497.75
  6. Step 6: Final answer
    x = 23,555.89

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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.