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Finding the Fourth Proportional to 52,745.40, 78,993.36 and 45,782.28

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Solution

The fourth proportional to 52,745.40, 78,993.36 and 45,782.28 is: 68,565.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,745.40 : 78,993.36 = 45,782.28 : x
  2. Step 2: Convert to fraction form
    52,745.40/78,993.36 = 45,782.28/x
  3. Step 3: Cross multiply
    52,745.40x = 78,993.36 × 45,782.28
  4. Step 4: Simplify right side
    52,745.40x = 3,616,496,125.66
  5. Step 5: Solve for x
    x = 3,616,496,125.66/52,745.40
  6. Step 6: Final answer
    x = 68,565.15

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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.