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Finding the Fourth Proportional to 72,969.59, 109,454.39 and 56,353.86

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Solution

The fourth proportional to 72,969.59, 109,454.39 and 56,353.86 is: 84,530.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,969.59 : 109,454.39 = 56,353.86 : x
  2. Step 2: Convert to fraction form
    72,969.59/109,454.39 = 56,353.86/x
  3. Step 3: Cross multiply
    72,969.59x = 109,454.39 × 56,353.86
  4. Step 4: Simplify right side
    72,969.59x = 6,168,177,300.00
  5. Step 5: Solve for x
    x = 6,168,177,300.00/72,969.59
  6. Step 6: Final answer
    x = 84,530.79

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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.