Home / 90,431.84-124,802.16-50,149.28

Finding the Fourth Proportional to 90,431.84, 124,802.16 and 50,149.28

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Solution

The fourth proportional to 90,431.84, 124,802.16 and 50,149.28 is: 69,209.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,431.84 : 124,802.16 = 50,149.28 : x
  2. Step 2: Convert to fraction form
    90,431.84/124,802.16 = 50,149.28/x
  3. Step 3: Cross multiply
    90,431.84x = 124,802.16 × 50,149.28
  4. Step 4: Simplify right side
    90,431.84x = 6,258,738,466.44
  5. Step 5: Solve for x
    x = 6,258,738,466.44/90,431.84
  6. Step 6: Final answer
    x = 69,209.46

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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.