Home / 78,584,702.70-117,877,054.05-40,320,950.70

Finding the Fourth Proportional to 78,584,702.70, 117,877,054.05 and 40,320,950.70

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Solution

The fourth proportional to 78,584,702.70, 117,877,054.05 and 40,320,950.70 is: 60,481,426.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,584,702.70 : 117,877,054.05 = 40,320,950.70 : x
  2. Step 2: Convert to fraction form
    78,584,702.70/117,877,054.05 = 40,320,950.70/x
  3. Step 3: Cross multiply
    78,584,702.70x = 117,877,054.05 × 40,320,950.70
  4. Step 4: Simplify right side
    78,584,702.70x = 4,752,914,885,011,286
  5. Step 5: Solve for x
    x = 4,752,914,885,011,286/78,584,702.70
  6. Step 6: Final answer
    x = 60,481,426.05

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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.