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Finding the Fourth Proportional to 72,950.32, 109,430.84 and 26,203.60

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Solution

The fourth proportional to 72,950.32, 109,430.84 and 26,203.60 is: 39,307.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,950.32 : 109,430.84 = 26,203.60 : x
  2. Step 2: Convert to fraction form
    72,950.32/109,430.84 = 26,203.60/x
  3. Step 3: Cross multiply
    72,950.32x = 109,430.84 × 26,203.60
  4. Step 4: Simplify right side
    72,950.32x = 2,867,481,959.02
  5. Step 5: Solve for x
    x = 2,867,481,959.02/72,950.32
  6. Step 6: Final answer
    x = 39,307.33

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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.