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Finding the Fourth Proportional to 78,750.36, 118,148.36 and 25,450.47

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Solution

The fourth proportional to 78,750.36, 118,148.36 and 25,450.47 is: 38,183.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,750.36 : 118,148.36 = 25,450.47 : x
  2. Step 2: Convert to fraction form
    78,750.36/118,148.36 = 25,450.47/x
  3. Step 3: Cross multiply
    78,750.36x = 118,148.36 × 25,450.47
  4. Step 4: Simplify right side
    78,750.36x = 3,006,931,164.48
  5. Step 5: Solve for x
    x = 3,006,931,164.48/78,750.36
  6. Step 6: Final answer
    x = 38,183.08

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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.