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Finding the Fourth Proportional to 72,259.60, 108,389.40 and 41,155.60

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Solution

The fourth proportional to 72,259.60, 108,389.40 and 41,155.60 is: 61,733.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,259.60 : 108,389.40 = 41,155.60 : x
  2. Step 2: Convert to fraction form
    72,259.60/108,389.40 = 41,155.60/x
  3. Step 3: Cross multiply
    72,259.60x = 108,389.40 × 41,155.60
  4. Step 4: Simplify right side
    72,259.60x = 4,460,830,790.64
  5. Step 5: Solve for x
    x = 4,460,830,790.64/72,259.60
  6. Step 6: Final answer
    x = 61,733.40

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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.