Home / 90,727.51-136,113.60-31,563.70

Finding the Fourth Proportional to 90,727.51, 136,113.60 and 31,563.70

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Solution

The fourth proportional to 90,727.51, 136,113.60 and 31,563.70 is: 47,353.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,727.51 : 136,113.60 = 31,563.70 : x
  2. Step 2: Convert to fraction form
    90,727.51/136,113.60 = 31,563.70/x
  3. Step 3: Cross multiply
    90,727.51x = 136,113.60 × 31,563.70
  4. Step 4: Simplify right side
    90,727.51x = 4,296,248,836.32
  5. Step 5: Solve for x
    x = 4,296,248,836.32/90,727.51
  6. Step 6: Final answer
    x = 47,353.32

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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.