Home / 51,020.72-70,408.52-28,358.98

Finding the Fourth Proportional to 51,020.72, 70,408.52 and 28,358.98

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Solution

The fourth proportional to 51,020.72, 70,408.52 and 28,358.98 is: 39,135.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,020.72 : 70,408.52 = 28,358.98 : x
  2. Step 2: Convert to fraction form
    51,020.72/70,408.52 = 28,358.98/x
  3. Step 3: Cross multiply
    51,020.72x = 70,408.52 × 28,358.98
  4. Step 4: Simplify right side
    51,020.72x = 1,996,713,810.51
  5. Step 5: Solve for x
    x = 1,996,713,810.51/51,020.72
  6. Step 6: Final answer
    x = 39,135.35

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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.