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Finding the Fourth Proportional to 30,505.80, 45,748.98 and 15,712.77

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Solution

The fourth proportional to 30,505.80, 45,748.98 and 15,712.77 is: 23,564.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,505.80 : 45,748.98 = 15,712.77 : x
  2. Step 2: Convert to fraction form
    30,505.80/45,748.98 = 15,712.77/x
  3. Step 3: Cross multiply
    30,505.80x = 45,748.98 × 15,712.77
  4. Step 4: Simplify right side
    30,505.80x = 718,843,200.47
  5. Step 5: Solve for x
    x = 718,843,200.47/30,505.80
  6. Step 6: Final answer
    x = 23,564.15

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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.