Home / 77,609,172.45-116,413,758.69-66,068,045.40

Finding the Fourth Proportional to 77,609,172.45, 116,413,758.69 and 66,068,045.40

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Solution

The fourth proportional to 77,609,172.45, 116,413,758.69 and 66,068,045.40 is: 99,102,068.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,609,172.45 : 116,413,758.69 = 66,068,045.40 : x
  2. Step 2: Convert to fraction form
    77,609,172.45/116,413,758.69 = 66,068,045.40/x
  3. Step 3: Cross multiply
    77,609,172.45x = 116,413,758.69 × 66,068,045.40
  4. Step 4: Simplify right side
    77,609,172.45x = 7,691,229,494,315,564
  5. Step 5: Solve for x
    x = 7,691,229,494,315,564/77,609,172.45
  6. Step 6: Final answer
    x = 99,102,068.11

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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.