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Finding the Fourth Proportional to 66,590,468.40, 99,892,355.40 and 18,069,092.40

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Solution

The fourth proportional to 66,590,468.40, 99,892,355.40 and 18,069,092.40 is: 27,105,443.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,590,468.40 : 99,892,355.40 = 18,069,092.40 : x
  2. Step 2: Convert to fraction form
    66,590,468.40/99,892,355.40 = 18,069,092.40/x
  3. Step 3: Cross multiply
    66,590,468.40x = 99,892,355.40 × 18,069,092.40
  4. Step 4: Simplify right side
    66,590,468.40x = 1,804,964,199,776,239
  5. Step 5: Solve for x
    x = 1,804,964,199,776,239/66,590,468.40
  6. Step 6: Final answer
    x = 27,105,443.81

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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.