Home / 51,378.12-77,099.58-20,209.32

Finding the Fourth Proportional to 51,378.12, 77,099.58 and 20,209.32

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Solution

The fourth proportional to 51,378.12, 77,099.58 and 20,209.32 is: 30,326.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,378.12 : 77,099.58 = 20,209.32 : x
  2. Step 2: Convert to fraction form
    51,378.12/77,099.58 = 20,209.32/x
  3. Step 3: Cross multiply
    51,378.12x = 77,099.58 × 20,209.32
  4. Step 4: Simplify right side
    51,378.12x = 1,558,130,084.09
  5. Step 5: Solve for x
    x = 1,558,130,084.09/51,378.12
  6. Step 6: Final answer
    x = 30,326.72

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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.