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Finding the Fourth Proportional to 66,446,901.20, 99,670,351.80 and 53,009,973.20

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Solution

The fourth proportional to 66,446,901.20, 99,670,351.80 and 53,009,973.20 is: 79,514,959.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,446,901.20 : 99,670,351.80 = 53,009,973.20 : x
  2. Step 2: Convert to fraction form
    66,446,901.20/99,670,351.80 = 53,009,973.20/x
  3. Step 3: Cross multiply
    66,446,901.20x = 99,670,351.80 × 53,009,973.20
  4. Step 4: Simplify right side
    66,446,901.20x = 5,283,522,677,752,572
  5. Step 5: Solve for x
    x = 5,283,522,677,752,572/66,446,901.20
  6. Step 6: Final answer
    x = 79,514,959.80

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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.