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Finding the Fourth Proportional to 72,223.20, 108,334.80 and 71,762.40

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Solution

The fourth proportional to 72,223.20, 108,334.80 and 71,762.40 is: 107,643.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,223.20 : 108,334.80 = 71,762.40 : x
  2. Step 2: Convert to fraction form
    72,223.20/108,334.80 = 71,762.40/x
  3. Step 3: Cross multiply
    72,223.20x = 108,334.80 × 71,762.40
  4. Step 4: Simplify right side
    72,223.20x = 7,774,365,251.52
  5. Step 5: Solve for x
    x = 7,774,365,251.52/72,223.20
  6. Step 6: Final answer
    x = 107,643.60

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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.