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Finding the Fourth Proportional to 30,078.83, 45,109.48 and 9,018.03

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Solution

The fourth proportional to 30,078.83, 45,109.48 and 9,018.03 is: 13,524.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,078.83 : 45,109.48 = 9,018.03 : x
  2. Step 2: Convert to fraction form
    30,078.83/45,109.48 = 9,018.03/x
  3. Step 3: Cross multiply
    30,078.83x = 45,109.48 × 9,018.03
  4. Step 4: Simplify right side
    30,078.83x = 406,798,395.83
  5. Step 5: Solve for x
    x = 406,798,395.83/30,078.83
  6. Step 6: Final answer
    x = 13,524.41

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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.