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Finding the Fourth Proportional to 100,030.92, 150,069.72 and 28,950.72

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Solution

The fourth proportional to 100,030.92, 150,069.72 and 28,950.72 is: 43,432.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,030.92 : 150,069.72 = 28,950.72 : x
  2. Step 2: Convert to fraction form
    100,030.92/150,069.72 = 28,950.72/x
  3. Step 3: Cross multiply
    100,030.92x = 150,069.72 × 28,950.72
  4. Step 4: Simplify right side
    100,030.92x = 4,344,626,444.20
  5. Step 5: Solve for x
    x = 4,344,626,444.20/100,030.92
  6. Step 6: Final answer
    x = 43,432.84

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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.