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Finding the Fourth Proportional to 115,323.85, 172,984.72 and 36,438.07

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Solution

The fourth proportional to 115,323.85, 172,984.72 and 36,438.07 is: 54,656.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,323.85 : 172,984.72 = 36,438.07 : x
  2. Step 2: Convert to fraction form
    115,323.85/172,984.72 = 36,438.07/x
  3. Step 3: Cross multiply
    115,323.85x = 172,984.72 × 36,438.07
  4. Step 4: Simplify right side
    115,323.85x = 6,303,229,336.29
  5. Step 5: Solve for x
    x = 6,303,229,336.29/115,323.85
  6. Step 6: Final answer
    x = 54,656.77

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1.5x scale

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.