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Finding the Fourth Proportional to 30,979.94, 46,489.35 and 28,987.34

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Solution

The fourth proportional to 30,979.94, 46,489.35 and 28,987.34 is: 43,499.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,979.94 : 46,489.35 = 28,987.34 : x
  2. Step 2: Convert to fraction form
    30,979.94/46,489.35 = 28,987.34/x
  3. Step 3: Cross multiply
    30,979.94x = 46,489.35 × 28,987.34
  4. Step 4: Simplify right side
    30,979.94x = 1,347,602,594.83
  5. Step 5: Solve for x
    x = 1,347,602,594.83/30,979.94
  6. Step 6: Final answer
    x = 43,499.20

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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.