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Finding the Fourth Proportional to 30,043.92, 45,061.12 and 10,053.76

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Solution

The fourth proportional to 30,043.92, 45,061.12 and 10,053.76 is: 15,079.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,043.92 : 45,061.12 = 10,053.76 : x
  2. Step 2: Convert to fraction form
    30,043.92/45,061.12 = 10,053.76/x
  3. Step 3: Cross multiply
    30,043.92x = 45,061.12 × 10,053.76
  4. Step 4: Simplify right side
    30,043.92x = 453,033,685.81
  5. Step 5: Solve for x
    x = 453,033,685.81/30,043.92
  6. Step 6: Final answer
    x = 15,079.05

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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.