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Finding the Fourth Proportional to 30,079.72, 45,119.45 and 7,590.45

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Solution

The fourth proportional to 30,079.72, 45,119.45 and 7,590.45 is: 11,385.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,079.72 : 45,119.45 = 7,590.45 : x
  2. Step 2: Convert to fraction form
    30,079.72/45,119.45 = 7,590.45/x
  3. Step 3: Cross multiply
    30,079.72x = 45,119.45 × 7,590.45
  4. Step 4: Simplify right side
    30,079.72x = 342,476,797.51
  5. Step 5: Solve for x
    x = 342,476,797.51/30,079.72
  6. Step 6: Final answer
    x = 11,385.64

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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.