Home / 51,220.11-70,678.58-28,556.98

Finding the Fourth Proportional to 51,220.11, 70,678.58 and 28,556.98

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Solution

The fourth proportional to 51,220.11, 70,678.58 and 28,556.98 is: 39,405.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,220.11 : 70,678.58 = 28,556.98 : x
  2. Step 2: Convert to fraction form
    51,220.11/70,678.58 = 28,556.98/x
  3. Step 3: Cross multiply
    51,220.11x = 70,678.58 × 28,556.98
  4. Step 4: Simplify right side
    51,220.11x = 2,018,366,795.49
  5. Step 5: Solve for x
    x = 2,018,366,795.49/51,220.11
  6. Step 6: Final answer
    x = 39,405.75

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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.