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Finding the Fourth Proportional to 65,616,679.03, 90,553,768.20 and 37,739,396.98

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Solution

The fourth proportional to 65,616,679.03, 90,553,768.20 and 37,739,396.98 is: 52,081,950.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,616,679.03 : 90,553,768.20 = 37,739,396.98 : x
  2. Step 2: Convert to fraction form
    65,616,679.03/90,553,768.20 = 37,739,396.98/x
  3. Step 3: Cross multiply
    65,616,679.03x = 90,553,768.20 × 37,739,396.98
  4. Step 4: Simplify right side
    65,616,679.03x = 3,417,444,606,134,700
  5. Step 5: Solve for x
    x = 3,417,444,606,134,700/65,616,679.03
  6. Step 6: Final answer
    x = 52,081,950.15

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.