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Finding the Fourth Proportional to 64,161,506.80, 96,265,879.80 and 21,032,117.20

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Solution

The fourth proportional to 64,161,506.80, 96,265,879.80 and 21,032,117.20 is: 31,555,918.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,161,506.80 : 96,265,879.80 = 21,032,117.20 : x
  2. Step 2: Convert to fraction form
    64,161,506.80/96,265,879.80 = 21,032,117.20/x
  3. Step 3: Cross multiply
    64,161,506.80x = 96,265,879.80 × 21,032,117.20
  4. Step 4: Simplify right side
    64,161,506.80x = 2,024,675,266,314,712.50
  5. Step 5: Solve for x
    x = 2,024,675,266,314,712.50/64,161,506.80
  6. Step 6: Final answer
    x = 31,555,918.30

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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.