Home / 78,168,679.84-117,133,449.72-41,782,248.64

Finding the Fourth Proportional to 78,168,679.84, 117,133,449.72 and 41,782,248.64

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Solution

The fourth proportional to 78,168,679.84, 117,133,449.72 and 41,782,248.64 is: 62,609,461.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,168,679.84 : 117,133,449.72 = 41,782,248.64 : x
  2. Step 2: Convert to fraction form
    78,168,679.84/117,133,449.72 = 41,782,248.64/x
  3. Step 3: Cross multiply
    78,168,679.84x = 117,133,449.72 × 41,782,248.64
  4. Step 4: Simplify right side
    78,168,679.84x = 4,894,098,920,261,978
  5. Step 5: Solve for x
    x = 4,894,098,920,261,978/78,168,679.84
  6. Step 6: Final answer
    x = 62,609,461.11

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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.