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Finding the Fourth Proportional to 66,609,926.64, 91,870,803.72 and 57,333,033.36

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Solution

The fourth proportional to 66,609,926.64, 91,870,803.72 and 57,333,033.36 is: 79,075,779.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,609,926.64 : 91,870,803.72 = 57,333,033.36 : x
  2. Step 2: Convert to fraction form
    66,609,926.64/91,870,803.72 = 57,333,033.36/x
  3. Step 3: Cross multiply
    66,609,926.64x = 91,870,803.72 × 57,333,033.36
  4. Step 4: Simplify right side
    66,609,926.64x = 5,267,231,854,488,772
  5. Step 5: Solve for x
    x = 5,267,231,854,488,772/66,609,926.64
  6. Step 6: Final answer
    x = 79,075,779.24

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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.