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Finding the Fourth Proportional to 30,407.67, 41,991.48 and 28,750.95

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Solution

The fourth proportional to 30,407.67, 41,991.48 and 28,750.95 is: 39,703.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,407.67 : 41,991.48 = 28,750.95 : x
  2. Step 2: Convert to fraction form
    30,407.67/41,991.48 = 28,750.95/x
  3. Step 3: Cross multiply
    30,407.67x = 41,991.48 × 28,750.95
  4. Step 4: Simplify right side
    30,407.67x = 1,207,294,941.91
  5. Step 5: Solve for x
    x = 1,207,294,941.91/30,407.67
  6. Step 6: Final answer
    x = 39,703.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.