Home / 51,041.57-70,420.52-30,890.79

Finding the Fourth Proportional to 51,041.57, 70,420.52 and 30,890.79

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Solution

The fourth proportional to 51,041.57, 70,420.52 and 30,890.79 is: 42,619.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,041.57 : 70,420.52 = 30,890.79 : x
  2. Step 2: Convert to fraction form
    51,041.57/70,420.52 = 30,890.79/x
  3. Step 3: Cross multiply
    51,041.57x = 70,420.52 × 30,890.79
  4. Step 4: Simplify right side
    51,041.57x = 2,175,345,572.24
  5. Step 5: Solve for x
    x = 2,175,345,572.24/51,041.57
  6. Step 6: Final answer
    x = 42,619.10

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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.