Home / 51,036.15-70,431.69-28,381.56

Finding the Fourth Proportional to 51,036.15, 70,431.69 and 28,381.56

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Solution

The fourth proportional to 51,036.15, 70,431.69 and 28,381.56 is: 39,167.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,036.15 : 70,431.69 = 28,381.56 : x
  2. Step 2: Convert to fraction form
    51,036.15/70,431.69 = 28,381.56/x
  3. Step 3: Cross multiply
    51,036.15x = 70,431.69 × 28,381.56
  4. Step 4: Simplify right side
    51,036.15x = 1,998,961,235.64
  5. Step 5: Solve for x
    x = 1,998,961,235.64/51,036.15
  6. Step 6: Final answer
    x = 39,167.56

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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.