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Finding the Fourth Proportional to 55,548, 76,657.86 and 30,399.12

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Solution

The fourth proportional to 55,548, 76,657.86 and 30,399.12 is: 41,951.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,548 : 76,657.86 = 30,399.12 : x
  2. Step 2: Convert to fraction form
    55,548/76,657.86 = 30,399.12/x
  3. Step 3: Cross multiply
    55,548x = 76,657.86 × 30,399.12
  4. Step 4: Simplify right side
    55,548x = 2,330,331,485.08
  5. Step 5: Solve for x
    x = 2,330,331,485.08/55,548
  6. Step 6: Final answer
    x = 41,951.67

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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.