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Finding the Fourth Proportional to 30,385.49, 45,578.03 and 9,325.49

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Solution

The fourth proportional to 30,385.49, 45,578.03 and 9,325.49 is: 13,988.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,385.49 : 45,578.03 = 9,325.49 : x
  2. Step 2: Convert to fraction form
    30,385.49/45,578.03 = 9,325.49/x
  3. Step 3: Cross multiply
    30,385.49x = 45,578.03 × 9,325.49
  4. Step 4: Simplify right side
    30,385.49x = 425,037,188.47
  5. Step 5: Solve for x
    x = 425,037,188.47/30,385.49
  6. Step 6: Final answer
    x = 13,988.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.