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Finding the Fourth Proportional to 45,378.88, 68,080.56 and 15,798.40

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Solution

The fourth proportional to 45,378.88, 68,080.56 and 15,798.40 is: 23,701.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,378.88 : 68,080.56 = 15,798.40 : x
  2. Step 2: Convert to fraction form
    45,378.88/68,080.56 = 15,798.40/x
  3. Step 3: Cross multiply
    45,378.88x = 68,080.56 × 15,798.40
  4. Step 4: Simplify right side
    45,378.88x = 1,075,563,919.10
  5. Step 5: Solve for x
    x = 1,075,563,919.10/45,378.88
  6. Step 6: Final answer
    x = 23,701.86

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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.