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Finding the Fourth Proportional to 45,434, 62,698.90 and 25,290.45

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Solution

The fourth proportional to 45,434, 62,698.90 and 25,290.45 is: 34,900.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,434 : 62,698.90 = 25,290.45 : x
  2. Step 2: Convert to fraction form
    45,434/62,698.90 = 25,290.45/x
  3. Step 3: Cross multiply
    45,434x = 62,698.90 × 25,290.45
  4. Step 4: Simplify right side
    45,434x = 1,585,683,395.51
  5. Step 5: Solve for x
    x = 1,585,683,395.51/45,434
  6. Step 6: Final answer
    x = 34,900.81

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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.