Home / 55,455.20-76,528.64-30,305.12

Finding the Fourth Proportional to 55,455.20, 76,528.64 and 30,305.12

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Solution

The fourth proportional to 55,455.20, 76,528.64 and 30,305.12 is: 41,821.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,455.20 : 76,528.64 = 30,305.12 : x
  2. Step 2: Convert to fraction form
    55,455.20/76,528.64 = 30,305.12/x
  3. Step 3: Cross multiply
    55,455.20x = 76,528.64 × 30,305.12
  4. Step 4: Simplify right side
    55,455.20x = 2,319,209,618.64
  5. Step 5: Solve for x
    x = 2,319,209,618.64/55,455.20
  6. Step 6: Final answer
    x = 41,821.32

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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.