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Finding the Fourth Proportional to 30,070.94, 45,106.43 and 18,994.46

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Solution

The fourth proportional to 30,070.94, 45,106.43 and 18,994.46 is: 28,491.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,070.94 : 45,106.43 = 18,994.46 : x
  2. Step 2: Convert to fraction form
    30,070.94/45,106.43 = 18,994.46/x
  3. Step 3: Cross multiply
    30,070.94x = 45,106.43 × 18,994.46
  4. Step 4: Simplify right side
    30,070.94x = 856,771,959.87
  5. Step 5: Solve for x
    x = 856,771,959.87/30,070.94
  6. Step 6: Final answer
    x = 28,491.70

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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.