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Finding the Fourth Proportional to 30,045.52, 45,074.72 and 8,987.19

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Solution

The fourth proportional to 30,045.52, 45,074.72 and 8,987.19 is: 13,482.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,045.52 : 45,074.72 = 8,987.19 : x
  2. Step 2: Convert to fraction form
    30,045.52/45,074.72 = 8,987.19/x
  3. Step 3: Cross multiply
    30,045.52x = 45,074.72 × 8,987.19
  4. Step 4: Simplify right side
    30,045.52x = 405,095,072.84
  5. Step 5: Solve for x
    x = 405,095,072.84/30,045.52
  6. Step 6: Final answer
    x = 13,482.71

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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.