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Finding the Fourth Proportional to 45,340.48, 67,907.04 and 28,699.84

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Solution

The fourth proportional to 45,340.48, 67,907.04 and 28,699.84 is: 42,984.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,340.48 : 67,907.04 = 28,699.84 : x
  2. Step 2: Convert to fraction form
    45,340.48/67,907.04 = 28,699.84/x
  3. Step 3: Cross multiply
    45,340.48x = 67,907.04 × 28,699.84
  4. Step 4: Simplify right side
    45,340.48x = 1,948,921,182.87
  5. Step 5: Solve for x
    x = 1,948,921,182.87/45,340.48
  6. Step 6: Final answer
    x = 42,984.13

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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.