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Finding the Fourth Proportional to 30,043.68, 45,063.88 and 10,320.16

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Solution

The fourth proportional to 30,043.68, 45,063.88 and 10,320.16 is: 15,479.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,043.68 : 45,063.88 = 10,320.16 : x
  2. Step 2: Convert to fraction form
    30,043.68/45,063.88 = 10,320.16/x
  3. Step 3: Cross multiply
    30,043.68x = 45,063.88 × 10,320.16
  4. Step 4: Simplify right side
    30,043.68x = 465,066,451.82
  5. Step 5: Solve for x
    x = 465,066,451.82/30,043.68
  6. Step 6: Final answer
    x = 15,479.68

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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.