Home / 51,078.97-70,488.76-28,420.13

Finding the Fourth Proportional to 51,078.97, 70,488.76 and 28,420.13

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Solution

The fourth proportional to 51,078.97, 70,488.76 and 28,420.13 is: 39,219.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,078.97 : 70,488.76 = 28,420.13 : x
  2. Step 2: Convert to fraction form
    51,078.97/70,488.76 = 28,420.13/x
  3. Step 3: Cross multiply
    51,078.97x = 70,488.76 × 28,420.13
  4. Step 4: Simplify right side
    51,078.97x = 2,003,299,228.19
  5. Step 5: Solve for x
    x = 2,003,299,228.19/51,078.97
  6. Step 6: Final answer
    x = 39,219.65

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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.