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Finding the Fourth Proportional to 66,724,430.40, 100,300,456.80 and 61,991,092.80

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Solution

The fourth proportional to 66,724,430.40, 100,300,456.80 and 61,991,092.80 is: 93,185,282.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,724,430.40 : 100,300,456.80 = 61,991,092.80 : x
  2. Step 2: Convert to fraction form
    66,724,430.40/100,300,456.80 = 61,991,092.80/x
  3. Step 3: Cross multiply
    66,724,430.40x = 100,300,456.80 × 61,991,092.80
  4. Step 4: Simplify right side
    66,724,430.40x = 6,217,734,925,371,191
  5. Step 5: Solve for x
    x = 6,217,734,925,371,191/66,724,430.40
  6. Step 6: Final answer
    x = 93,185,282.93

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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.