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Finding the Fourth Proportional to 90,263.73, 124,564.94 and 49,978.20

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Solution

The fourth proportional to 90,263.73, 124,564.94 and 49,978.20 is: 68,970.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,263.73 : 124,564.94 = 49,978.20 : x
  2. Step 2: Convert to fraction form
    90,263.73/124,564.94 = 49,978.20/x
  3. Step 3: Cross multiply
    90,263.73x = 124,564.94 × 49,978.20
  4. Step 4: Simplify right side
    90,263.73x = 6,225,531,484.31
  5. Step 5: Solve for x
    x = 6,225,531,484.31/90,263.73
  6. Step 6: Final answer
    x = 68,970.47

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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.