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Finding the Fourth Proportional to 30,006.60, 45,009.90 and 29,812.20

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Solution

The fourth proportional to 30,006.60, 45,009.90 and 29,812.20 is: 44,718.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,006.60 : 45,009.90 = 29,812.20 : x
  2. Step 2: Convert to fraction form
    30,006.60/45,009.90 = 29,812.20/x
  3. Step 3: Cross multiply
    30,006.60x = 45,009.90 × 29,812.20
  4. Step 4: Simplify right side
    30,006.60x = 1,341,844,140.78
  5. Step 5: Solve for x
    x = 1,341,844,140.78/30,006.60
  6. Step 6: Final answer
    x = 44,718.30

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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.