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Finding the Fourth Proportional to 40,305, 60,458.58 and 12,603

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Solution

The fourth proportional to 40,305, 60,458.58 and 12,603 is: 18,904.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,305 : 60,458.58 = 12,603 : x
  2. Step 2: Convert to fraction form
    40,305/60,458.58 = 12,603/x
  3. Step 3: Cross multiply
    40,305x = 60,458.58 × 12,603
  4. Step 4: Simplify right side
    40,305x = 761,959,483.74
  5. Step 5: Solve for x
    x = 761,959,483.74/40,305
  6. Step 6: Final answer
    x = 18,904.84

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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.