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Finding the Fourth Proportional to 55,803.36, 76,984.92 and 47,269.20

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Solution

The fourth proportional to 55,803.36, 76,984.92 and 47,269.20 is: 65,211.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,803.36 : 76,984.92 = 47,269.20 : x
  2. Step 2: Convert to fraction form
    55,803.36/76,984.92 = 47,269.20/x
  3. Step 3: Cross multiply
    55,803.36x = 76,984.92 × 47,269.20
  4. Step 4: Simplify right side
    55,803.36x = 3,639,015,580.46
  5. Step 5: Solve for x
    x = 3,639,015,580.46/55,803.36
  6. Step 6: Final answer
    x = 65,211.41

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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.