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Finding the Fourth Proportional to 90,007.93, 124,210.42 and 49,721.50

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Solution

The fourth proportional to 90,007.93, 124,210.42 and 49,721.50 is: 68,615.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,007.93 : 124,210.42 = 49,721.50 : x
  2. Step 2: Convert to fraction form
    90,007.93/124,210.42 = 49,721.50/x
  3. Step 3: Cross multiply
    90,007.93x = 124,210.42 × 49,721.50
  4. Step 4: Simplify right side
    90,007.93x = 6,175,928,398.03
  5. Step 5: Solve for x
    x = 6,175,928,398.03/90,007.93
  6. Step 6: Final answer
    x = 68,615.38

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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.