Home / 78,235.48-117,172.50-47,001.88

Finding the Fourth Proportional to 78,235.48, 117,172.50 and 47,001.88

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Solution

The fourth proportional to 78,235.48, 117,172.50 and 47,001.88 is: 70,394.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,235.48 : 117,172.50 = 47,001.88 : x
  2. Step 2: Convert to fraction form
    78,235.48/117,172.50 = 47,001.88/x
  3. Step 3: Cross multiply
    78,235.48x = 117,172.50 × 47,001.88
  4. Step 4: Simplify right side
    78,235.48x = 5,507,327,784.30
  5. Step 5: Solve for x
    x = 5,507,327,784.30/78,235.48
  6. Step 6: Final answer
    x = 70,394.25

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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.