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Finding the Fourth Proportional to 66,852,003.70, 100,278,005.55 and 57,604,930.30

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Solution

The fourth proportional to 66,852,003.70, 100,278,005.55 and 57,604,930.30 is: 86,407,395.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,852,003.70 : 100,278,005.55 = 57,604,930.30 : x
  2. Step 2: Convert to fraction form
    66,852,003.70/100,278,005.55 = 57,604,930.30/x
  3. Step 3: Cross multiply
    66,852,003.70x = 100,278,005.55 × 57,604,930.30
  4. Step 4: Simplify right side
    66,852,003.70x = 5,776,507,520,330,763
  5. Step 5: Solve for x
    x = 5,776,507,520,330,763/66,852,003.70
  6. Step 6: Final answer
    x = 86,407,395.45

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1.5x scale

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.