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Finding the Fourth Proportional to 30,155.76, 45,234.36 and 17,762.76

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Solution

The fourth proportional to 30,155.76, 45,234.36 and 17,762.76 is: 26,644.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,155.76 : 45,234.36 = 17,762.76 : x
  2. Step 2: Convert to fraction form
    30,155.76/45,234.36 = 17,762.76/x
  3. Step 3: Cross multiply
    30,155.76x = 45,234.36 × 17,762.76
  4. Step 4: Simplify right side
    30,155.76x = 803,487,080.43
  5. Step 5: Solve for x
    x = 803,487,080.43/30,155.76
  6. Step 6: Final answer
    x = 26,644.56

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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.