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Finding the Fourth Proportional to 90,260.70, 124,564.37 and 49,978.91

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Solution

The fourth proportional to 90,260.70, 124,564.37 and 49,978.91 is: 68,973.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,260.70 : 124,564.37 = 49,978.91 : x
  2. Step 2: Convert to fraction form
    90,260.70/124,564.37 = 49,978.91/x
  3. Step 3: Cross multiply
    90,260.70x = 124,564.37 × 49,978.91
  4. Step 4: Simplify right side
    90,260.70x = 6,225,591,437.44
  5. Step 5: Solve for x
    x = 6,225,591,437.44/90,260.70
  6. Step 6: Final answer
    x = 68,973.45

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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.