Home / 42,428.80-63,643.20-41,772.70

Finding the Fourth Proportional to 42,428.80, 63,643.20 and 41,772.70

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Solution

The fourth proportional to 42,428.80, 63,643.20 and 41,772.70 is: 62,659.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,428.80 : 63,643.20 = 41,772.70 : x
  2. Step 2: Convert to fraction form
    42,428.80/63,643.20 = 41,772.70/x
  3. Step 3: Cross multiply
    42,428.80x = 63,643.20 × 41,772.70
  4. Step 4: Simplify right side
    42,428.80x = 2,658,548,300.64
  5. Step 5: Solve for x
    x = 2,658,548,300.64/42,428.80
  6. Step 6: Final answer
    x = 62,659.05

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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.