Home / 55,711.68-76,880.80-30,560.96

Finding the Fourth Proportional to 55,711.68, 76,880.80 and 30,560.96

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Solution

The fourth proportional to 55,711.68, 76,880.80 and 30,560.96 is: 42,173.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,711.68 : 76,880.80 = 30,560.96 : x
  2. Step 2: Convert to fraction form
    55,711.68/76,880.80 = 30,560.96/x
  3. Step 3: Cross multiply
    55,711.68x = 76,880.80 × 30,560.96
  4. Step 4: Simplify right side
    55,711.68x = 2,349,551,053.57
  5. Step 5: Solve for x
    x = 2,349,551,053.57/55,711.68
  6. Step 6: Final answer
    x = 42,173.40

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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.