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Finding the Fourth Proportional to 72,730.25, 100,368.35 and 40,898.87

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Solution

The fourth proportional to 72,730.25, 100,368.35 and 40,898.87 is: 56,440.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,730.25 : 100,368.35 = 40,898.87 : x
  2. Step 2: Convert to fraction form
    72,730.25/100,368.35 = 40,898.87/x
  3. Step 3: Cross multiply
    72,730.25x = 100,368.35 × 40,898.87
  4. Step 4: Simplify right side
    72,730.25x = 4,104,951,392.43
  5. Step 5: Solve for x
    x = 4,104,951,392.43/72,730.25
  6. Step 6: Final answer
    x = 56,440.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.