Home / 74,619.60-111,929.40-65,871.60

Finding the Fourth Proportional to 74,619.60, 111,929.40 and 65,871.60

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Solution

The fourth proportional to 74,619.60, 111,929.40 and 65,871.60 is: 98,807.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,619.60 : 111,929.40 = 65,871.60 : x
  2. Step 2: Convert to fraction form
    74,619.60/111,929.40 = 65,871.60/x
  3. Step 3: Cross multiply
    74,619.60x = 111,929.40 × 65,871.60
  4. Step 4: Simplify right side
    74,619.60x = 7,372,968,665.04
  5. Step 5: Solve for x
    x = 7,372,968,665.04/74,619.60
  6. Step 6: Final answer
    x = 98,807.40

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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.