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Finding the Fourth Proportional to 66,703,347.80, 100,055,021.70 and 66,065,618.60

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Solution

The fourth proportional to 66,703,347.80, 100,055,021.70 and 66,065,618.60 is: 99,098,427.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,703,347.80 : 100,055,021.70 = 66,065,618.60 : x
  2. Step 2: Convert to fraction form
    66,703,347.80/100,055,021.70 = 66,065,618.60/x
  3. Step 3: Cross multiply
    66,703,347.80x = 100,055,021.70 × 66,065,618.60
  4. Step 4: Simplify right side
    66,703,347.80x = 6,610,196,902,646,924
  5. Step 5: Solve for x
    x = 6,610,196,902,646,924/66,703,347.80
  6. Step 6: Final answer
    x = 99,098,427.90

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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.