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Finding the Fourth Proportional to 72,414,101.40, 108,621,152.10 and 64,477,915.80

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Solution

The fourth proportional to 72,414,101.40, 108,621,152.10 and 64,477,915.80 is: 96,716,873.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,414,101.40 : 108,621,152.10 = 64,477,915.80 : x
  2. Step 2: Convert to fraction form
    72,414,101.40/108,621,152.10 = 64,477,915.80/x
  3. Step 3: Cross multiply
    72,414,101.40x = 108,621,152.10 × 64,477,915.80
  4. Step 4: Simplify right side
    72,414,101.40x = 7,003,665,499,202,792
  5. Step 5: Solve for x
    x = 7,003,665,499,202,792/72,414,101.40
  6. Step 6: Final answer
    x = 96,716,873.70

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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.