Home / 90,398.64-135,421.44-42,946.20

Finding the Fourth Proportional to 90,398.64, 135,421.44 and 42,946.20

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Solution

The fourth proportional to 90,398.64, 135,421.44 and 42,946.20 is: 64,335.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,398.64 : 135,421.44 = 42,946.20 : x
  2. Step 2: Convert to fraction form
    90,398.64/135,421.44 = 42,946.20/x
  3. Step 3: Cross multiply
    90,398.64x = 135,421.44 × 42,946.20
  4. Step 4: Simplify right side
    90,398.64x = 5,815,836,246.53
  5. Step 5: Solve for x
    x = 5,815,836,246.53/90,398.64
  6. Step 6: Final answer
    x = 64,335.44

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.