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Finding the Fourth Proportional to 40,978,045.70, 61,467,068.55 and 38,626,583.30

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Solution

The fourth proportional to 40,978,045.70, 61,467,068.55 and 38,626,583.30 is: 57,939,874.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,978,045.70 : 61,467,068.55 = 38,626,583.30 : x
  2. Step 2: Convert to fraction form
    40,978,045.70/61,467,068.55 = 38,626,583.30/x
  3. Step 3: Cross multiply
    40,978,045.70x = 61,467,068.55 × 38,626,583.30
  4. Step 4: Simplify right side
    40,978,045.70x = 2,374,262,843,553,385
  5. Step 5: Solve for x
    x = 2,374,262,843,553,385/40,978,045.70
  6. Step 6: Final answer
    x = 57,939,874.95

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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.