Home / 90,455.42-135,695.48-31,275.20

Finding the Fourth Proportional to 90,455.42, 135,695.48 and 31,275.20

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Solution

The fourth proportional to 90,455.42, 135,695.48 and 31,275.20 is: 46,917.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,455.42 : 135,695.48 = 31,275.20 : x
  2. Step 2: Convert to fraction form
    90,455.42/135,695.48 = 31,275.20/x
  3. Step 3: Cross multiply
    90,455.42x = 135,695.48 × 31,275.20
  4. Step 4: Simplify right side
    90,455.42x = 4,243,902,441.24
  5. Step 5: Solve for x
    x = 4,243,902,441.24/90,455.42
  6. Step 6: Final answer
    x = 46,917.06

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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.