Home / 66,429,872.80-99,644,809.20-39,108,119.20

Finding the Fourth Proportional to 66,429,872.80, 99,644,809.20 and 39,108,119.20

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Solution

The fourth proportional to 66,429,872.80, 99,644,809.20 and 39,108,119.20 is: 58,662,178.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,429,872.80 : 99,644,809.20 = 39,108,119.20 : x
  2. Step 2: Convert to fraction form
    66,429,872.80/99,644,809.20 = 39,108,119.20/x
  3. Step 3: Cross multiply
    66,429,872.80x = 99,644,809.20 × 39,108,119.20
  4. Step 4: Simplify right side
    66,429,872.80x = 3,896,921,075,854,857
  5. Step 5: Solve for x
    x = 3,896,921,075,854,857/66,429,872.80
  6. Step 6: Final answer
    x = 58,662,178.80

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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.