Home / 45,745.18-63,130.30-28,286.32

Finding the Fourth Proportional to 45,745.18, 63,130.30 and 28,286.32

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Solution

The fourth proportional to 45,745.18, 63,130.30 and 28,286.32 is: 39,036.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,745.18 : 63,130.30 = 28,286.32 : x
  2. Step 2: Convert to fraction form
    45,745.18/63,130.30 = 28,286.32/x
  3. Step 3: Cross multiply
    45,745.18x = 63,130.30 × 28,286.32
  4. Step 4: Simplify right side
    45,745.18x = 1,785,723,867.50
  5. Step 5: Solve for x
    x = 1,785,723,867.50/45,745.18
  6. Step 6: Final answer
    x = 39,036.33

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Double scale
Find fourth proportional to 45,746.18, 63,131.68 and 28,287.32
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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.