Home / 51,431.86-70,975.60-28,770.76

Finding the Fourth Proportional to 51,431.86, 70,975.60 and 28,770.76

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Solution

The fourth proportional to 51,431.86, 70,975.60 and 28,770.76 is: 39,703.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,431.86 : 70,975.60 = 28,770.76 : x
  2. Step 2: Convert to fraction form
    51,431.86/70,975.60 = 28,770.76/x
  3. Step 3: Cross multiply
    51,431.86x = 70,975.60 × 28,770.76
  4. Step 4: Simplify right side
    51,431.86x = 2,042,021,953.46
  5. Step 5: Solve for x
    x = 2,042,021,953.46/51,431.86
  6. Step 6: Final answer
    x = 39,703.44

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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.