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Finding the Fourth Proportional to 74,203.11, 111,038.60 and 64,242.11

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Solution

The fourth proportional to 74,203.11, 111,038.60 and 64,242.11 is: 96,132.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,203.11 : 111,038.60 = 64,242.11 : x
  2. Step 2: Convert to fraction form
    74,203.11/111,038.60 = 64,242.11/x
  3. Step 3: Cross multiply
    74,203.11x = 111,038.60 × 64,242.11
  4. Step 4: Simplify right side
    74,203.11x = 7,133,353,955.45
  5. Step 5: Solve for x
    x = 7,133,353,955.45/74,203.11
  6. Step 6: Final answer
    x = 96,132.82

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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.