Home / 77,291,974.20-115,937,886.72-19,784,153.64

Finding the Fourth Proportional to 77,291,974.20, 115,937,886.72 and 19,784,153.64

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Solution

The fourth proportional to 77,291,974.20, 115,937,886.72 and 19,784,153.64 is: 29,676,211.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,291,974.20 : 115,937,886.72 = 19,784,153.64 : x
  2. Step 2: Convert to fraction form
    77,291,974.20/115,937,886.72 = 19,784,153.64/x
  3. Step 3: Cross multiply
    77,291,974.20x = 115,937,886.72 × 19,784,153.64
  4. Step 4: Simplify right side
    77,291,974.20x = 2,293,732,963,565,395.50
  5. Step 5: Solve for x
    x = 2,293,732,963,565,395.50/77,291,974.20
  6. Step 6: Final answer
    x = 29,676,211.37

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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.