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Finding the Fourth Proportional to 77,967.78, 116,950.68 and 18,802.98

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Solution

The fourth proportional to 77,967.78, 116,950.68 and 18,802.98 is: 28,204.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,967.78 : 116,950.68 = 18,802.98 : x
  2. Step 2: Convert to fraction form
    77,967.78/116,950.68 = 18,802.98/x
  3. Step 3: Cross multiply
    77,967.78x = 116,950.68 × 18,802.98
  4. Step 4: Simplify right side
    77,967.78x = 2,199,021,297.03
  5. Step 5: Solve for x
    x = 2,199,021,297.03/77,967.78
  6. Step 6: Final answer
    x = 28,204.23

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1.5x scale

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.