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Finding the Fourth Proportional to 72,981.60, 100,715.58 and 44,293.02

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Solution

The fourth proportional to 72,981.60, 100,715.58 and 44,293.02 is: 61,124.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,981.60 : 100,715.58 = 44,293.02 : x
  2. Step 2: Convert to fraction form
    72,981.60/100,715.58 = 44,293.02/x
  3. Step 3: Cross multiply
    72,981.60x = 100,715.58 × 44,293.02
  4. Step 4: Simplify right side
    72,981.60x = 4,460,997,199.25
  5. Step 5: Solve for x
    x = 4,460,997,199.25/72,981.60
  6. Step 6: Final answer
    x = 61,124.96

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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.