Home / 78,865,270.06-118,192,161.79-61,378,941.76

Finding the Fourth Proportional to 78,865,270.06, 118,192,161.79 and 61,378,941.76

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Solution

The fourth proportional to 78,865,270.06, 118,192,161.79 and 61,378,941.76 is: 91,986,115.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,865,270.06 : 118,192,161.79 = 61,378,941.76 : x
  2. Step 2: Convert to fraction form
    78,865,270.06/118,192,161.79 = 61,378,941.76/x
  3. Step 3: Cross multiply
    78,865,270.06x = 118,192,161.79 × 61,378,941.76
  4. Step 4: Simplify right side
    78,865,270.06x = 7,254,509,815,442,982
  5. Step 5: Solve for x
    x = 7,254,509,815,442,982/78,865,270.06
  6. Step 6: Final answer
    x = 91,986,115.18

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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.