Home / 53,430.40-80,145.60-51,155.20

Finding the Fourth Proportional to 53,430.40, 80,145.60 and 51,155.20

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Solution

The fourth proportional to 53,430.40, 80,145.60 and 51,155.20 is: 76,732.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,430.40 : 80,145.60 = 51,155.20 : x
  2. Step 2: Convert to fraction form
    53,430.40/80,145.60 = 51,155.20/x
  3. Step 3: Cross multiply
    53,430.40x = 80,145.60 × 51,155.20
  4. Step 4: Simplify right side
    53,430.40x = 4,099,864,197.12
  5. Step 5: Solve for x
    x = 4,099,864,197.12/53,430.40
  6. Step 6: Final answer
    x = 76,732.80

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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.