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Finding the Fourth Proportional to 29,903.72, 40,968.28 and 28,782.68

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Solution

The fourth proportional to 29,903.72, 40,968.28 and 28,782.68 is: 39,432.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,903.72 : 40,968.28 = 28,782.68 : x
  2. Step 2: Convert to fraction form
    29,903.72/40,968.28 = 28,782.68/x
  3. Step 3: Cross multiply
    29,903.72x = 40,968.28 × 28,782.68
  4. Step 4: Simplify right side
    29,903.72x = 1,179,176,893.39
  5. Step 5: Solve for x
    x = 1,179,176,893.39/29,903.72
  6. Step 6: Final answer
    x = 39,432.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.