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Finding the Fourth Proportional to 90,284.60, 124,462.90 and 63,343.64

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Solution

The fourth proportional to 90,284.60, 124,462.90 and 63,343.64 is: 87,323.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,284.60 : 124,462.90 = 63,343.64 : x
  2. Step 2: Convert to fraction form
    90,284.60/124,462.90 = 63,343.64/x
  3. Step 3: Cross multiply
    90,284.60x = 124,462.90 × 63,343.64
  4. Step 4: Simplify right side
    90,284.60x = 7,883,933,130.96
  5. Step 5: Solve for x
    x = 7,883,933,130.96/90,284.60
  6. Step 6: Final answer
    x = 87,323.12

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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.