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Finding the Fourth Proportional to 30,089.76, 45,137.76 and 10,365.92

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Solution

The fourth proportional to 30,089.76, 45,137.76 and 10,365.92 is: 15,549.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,089.76 : 45,137.76 = 10,365.92 : x
  2. Step 2: Convert to fraction form
    30,089.76/45,137.76 = 10,365.92/x
  3. Step 3: Cross multiply
    30,089.76x = 45,137.76 × 10,365.92
  4. Step 4: Simplify right side
    30,089.76x = 467,894,409.14
  5. Step 5: Solve for x
    x = 467,894,409.14/30,089.76
  6. Step 6: Final answer
    x = 15,549.95

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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.