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Finding the Fourth Proportional to 90,459.53, 124,829.06 and 50,170.40

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Solution

The fourth proportional to 90,459.53, 124,829.06 and 50,170.40 is: 69,232.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,459.53 : 124,829.06 = 50,170.40 : x
  2. Step 2: Convert to fraction form
    90,459.53/124,829.06 = 50,170.40/x
  3. Step 3: Cross multiply
    90,459.53x = 124,829.06 × 50,170.40
  4. Step 4: Simplify right side
    90,459.53x = 6,262,722,996.83
  5. Step 5: Solve for x
    x = 6,262,722,996.83/90,459.53
  6. Step 6: Final answer
    x = 69,232.32

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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.