Home / 90,409.84-124,762.20-50,663.28

Finding the Fourth Proportional to 90,409.84, 124,762.20 and 50,663.28

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Solution

The fourth proportional to 90,409.84, 124,762.20 and 50,663.28 is: 69,913.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,409.84 : 124,762.20 = 50,663.28 : x
  2. Step 2: Convert to fraction form
    90,409.84/124,762.20 = 50,663.28/x
  3. Step 3: Cross multiply
    90,409.84x = 124,762.20 × 50,663.28
  4. Step 4: Simplify right side
    90,409.84x = 6,320,862,272.02
  5. Step 5: Solve for x
    x = 6,320,862,272.02/90,409.84
  6. Step 6: Final answer
    x = 69,913.43

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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.