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Finding the Fourth Proportional to 30,076.95, 45,120.95 and 10,084.43

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Solution

The fourth proportional to 30,076.95, 45,120.95 and 10,084.43 is: 15,128.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,076.95 : 45,120.95 = 10,084.43 : x
  2. Step 2: Convert to fraction form
    30,076.95/45,120.95 = 10,084.43/x
  3. Step 3: Cross multiply
    30,076.95x = 45,120.95 × 10,084.43
  4. Step 4: Simplify right side
    30,076.95x = 455,019,061.81
  5. Step 5: Solve for x
    x = 455,019,061.81/30,076.95
  6. Step 6: Final answer
    x = 15,128.50

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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.