Home / 82,778.64-124,155.36-30,188.16

Finding the Fourth Proportional to 82,778.64, 124,155.36 and 30,188.16

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Solution

The fourth proportional to 82,778.64, 124,155.36 and 30,188.16 is: 45,277.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,778.64 : 124,155.36 = 30,188.16 : x
  2. Step 2: Convert to fraction form
    82,778.64/124,155.36 = 30,188.16/x
  3. Step 3: Cross multiply
    82,778.64x = 124,155.36 × 30,188.16
  4. Step 4: Simplify right side
    82,778.64x = 3,748,021,872.54
  5. Step 5: Solve for x
    x = 3,748,021,872.54/82,778.64
  6. Step 6: Final answer
    x = 45,277.64

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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.