Home / 66,931.41-100,427.76-28,992.28

Finding the Fourth Proportional to 66,931.41, 100,427.76 and 28,992.28

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Solution

The fourth proportional to 66,931.41, 100,427.76 and 28,992.28 is: 43,501.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,931.41 : 100,427.76 = 28,992.28 : x
  2. Step 2: Convert to fraction form
    66,931.41/100,427.76 = 28,992.28/x
  3. Step 3: Cross multiply
    66,931.41x = 100,427.76 × 28,992.28
  4. Step 4: Simplify right side
    66,931.41x = 2,911,629,737.69
  5. Step 5: Solve for x
    x = 2,911,629,737.69/66,931.41
  6. Step 6: Final answer
    x = 43,501.69

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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.