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Finding the Fourth Proportional to 74,669.60, 112,004.40 and 65,921.60

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Solution

The fourth proportional to 74,669.60, 112,004.40 and 65,921.60 is: 98,882.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,669.60 : 112,004.40 = 65,921.60 : x
  2. Step 2: Convert to fraction form
    74,669.60/112,004.40 = 65,921.60/x
  3. Step 3: Cross multiply
    74,669.60x = 112,004.40 × 65,921.60
  4. Step 4: Simplify right side
    74,669.60x = 7,383,509,255.04
  5. Step 5: Solve for x
    x = 7,383,509,255.04/74,669.60
  6. Step 6: Final answer
    x = 98,882.40

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1.5x scale

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.