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Finding the Fourth Proportional to 74,617.60, 111,926.40 and 65,869.60

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Solution

The fourth proportional to 74,617.60, 111,926.40 and 65,869.60 is: 98,804.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,617.60 : 111,926.40 = 65,869.60 : x
  2. Step 2: Convert to fraction form
    74,617.60/111,926.40 = 65,869.60/x
  3. Step 3: Cross multiply
    74,617.60x = 111,926.40 × 65,869.60
  4. Step 4: Simplify right side
    74,617.60x = 7,372,547,197.44
  5. Step 5: Solve for x
    x = 7,372,547,197.44/74,617.60
  6. Step 6: Final answer
    x = 98,804.40

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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.