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Finding the Fourth Proportional to 77,398.93, 116,126.06 and 47,065.78

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Solution

The fourth proportional to 77,398.93, 116,126.06 and 47,065.78 is: 70,615.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,398.93 : 116,126.06 = 47,065.78 : x
  2. Step 2: Convert to fraction form
    77,398.93/116,126.06 = 47,065.78/x
  3. Step 3: Cross multiply
    77,398.93x = 116,126.06 × 47,065.78
  4. Step 4: Simplify right side
    77,398.93x = 5,465,563,592.23
  5. Step 5: Solve for x
    x = 5,465,563,592.23/77,398.93
  6. Step 6: Final answer
    x = 70,615.49

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.