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Finding the Fourth Proportional to 30,299.60, 45,384.60 and 25,115.60

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Solution

The fourth proportional to 30,299.60, 45,384.60 and 25,115.60 is: 37,619.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,299.60 : 45,384.60 = 25,115.60 : x
  2. Step 2: Convert to fraction form
    30,299.60/45,384.60 = 25,115.60/x
  3. Step 3: Cross multiply
    30,299.60x = 45,384.60 × 25,115.60
  4. Step 4: Simplify right side
    30,299.60x = 1,139,861,459.76
  5. Step 5: Solve for x
    x = 1,139,861,459.76/30,299.60
  6. Step 6: Final answer
    x = 37,619.69

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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.