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Finding the Fourth Proportional to 45,441.70, 68,000.55 and 28,809.70

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Solution

The fourth proportional to 45,441.70, 68,000.55 and 28,809.70 is: 43,111.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,441.70 : 68,000.55 = 28,809.70 : x
  2. Step 2: Convert to fraction form
    45,441.70/68,000.55 = 28,809.70/x
  3. Step 3: Cross multiply
    45,441.70x = 68,000.55 × 28,809.70
  4. Step 4: Simplify right side
    45,441.70x = 1,959,075,445.34
  5. Step 5: Solve for x
    x = 1,959,075,445.34/45,441.70
  6. Step 6: Final answer
    x = 43,111.84

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1.5x scale

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.