Home / 55,153.64-76,108.20-31,280.60

Finding the Fourth Proportional to 55,153.64, 76,108.20 and 31,280.60

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Solution

The fourth proportional to 55,153.64, 76,108.20 and 31,280.60 is: 43,165.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,153.64 : 76,108.20 = 31,280.60 : x
  2. Step 2: Convert to fraction form
    55,153.64/76,108.20 = 31,280.60/x
  3. Step 3: Cross multiply
    55,153.64x = 76,108.20 × 31,280.60
  4. Step 4: Simplify right side
    55,153.64x = 2,380,710,160.92
  5. Step 5: Solve for x
    x = 2,380,710,160.92/55,153.64
  6. Step 6: Final answer
    x = 43,165.06

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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.