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Finding the Fourth Proportional to 78,907.64, 118,369.35 and 22,749.12

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Solution

The fourth proportional to 78,907.64, 118,369.35 and 22,749.12 is: 34,125.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,907.64 : 118,369.35 = 22,749.12 : x
  2. Step 2: Convert to fraction form
    78,907.64/118,369.35 = 22,749.12/x
  3. Step 3: Cross multiply
    78,907.64x = 118,369.35 × 22,749.12
  4. Step 4: Simplify right side
    78,907.64x = 2,692,798,547.47
  5. Step 5: Solve for x
    x = 2,692,798,547.47/78,907.64
  6. Step 6: Final answer
    x = 34,125.96

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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.