Home / 55,129.20-82,693.80-53,228.40

Finding the Fourth Proportional to 55,129.20, 82,693.80 and 53,228.40

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Solution

The fourth proportional to 55,129.20, 82,693.80 and 53,228.40 is: 79,842.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,129.20 : 82,693.80 = 53,228.40 : x
  2. Step 2: Convert to fraction form
    55,129.20/82,693.80 = 53,228.40/x
  3. Step 3: Cross multiply
    55,129.20x = 82,693.80 × 53,228.40
  4. Step 4: Simplify right side
    55,129.20x = 4,401,658,663.92
  5. Step 5: Solve for x
    x = 4,401,658,663.92/55,129.20
  6. Step 6: Final answer
    x = 79,842.60

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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.