Home / 55,783.18-76,980.88-30,289.60

Finding the Fourth Proportional to 55,783.18, 76,980.88 and 30,289.60

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Solution

The fourth proportional to 55,783.18, 76,980.88 and 30,289.60 is: 41,799.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,783.18 : 76,980.88 = 30,289.60 : x
  2. Step 2: Convert to fraction form
    55,783.18/76,980.88 = 30,289.60/x
  3. Step 3: Cross multiply
    55,783.18x = 76,980.88 × 30,289.60
  4. Step 4: Simplify right side
    55,783.18x = 2,331,719,763.92
  5. Step 5: Solve for x
    x = 2,331,719,763.92/55,783.18
  6. Step 6: Final answer
    x = 41,799.69

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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.