Home / 90,565.44-135,946.58-76,590.51

Finding the Fourth Proportional to 90,565.44, 135,946.58 and 76,590.51

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Solution

The fourth proportional to 90,565.44, 135,946.58 and 76,590.51 is: 114,968.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,565.44 : 135,946.58 = 76,590.51 : x
  2. Step 2: Convert to fraction form
    90,565.44/135,946.58 = 76,590.51/x
  3. Step 3: Cross multiply
    90,565.44x = 135,946.58 × 76,590.51
  4. Step 4: Simplify right side
    90,565.44x = 10,412,217,002.20
  5. Step 5: Solve for x
    x = 10,412,217,002.20/90,565.44
  6. Step 6: Final answer
    x = 114,968.99

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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.