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Finding the Fourth Proportional to 77,335.80, 116,111.70 and 49,428.60

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Solution

The fourth proportional to 77,335.80, 116,111.70 and 49,428.60 is: 74,211.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,335.80 : 116,111.70 = 49,428.60 : x
  2. Step 2: Convert to fraction form
    77,335.80/116,111.70 = 49,428.60/x
  3. Step 3: Cross multiply
    77,335.80x = 116,111.70 × 49,428.60
  4. Step 4: Simplify right side
    77,335.80x = 5,739,238,774.62
  5. Step 5: Solve for x
    x = 5,739,238,774.62/77,335.80
  6. Step 6: Final answer
    x = 74,211.93

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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.