Home / 72,939,745.20-109,409,617.80-42,632,007.60

Finding the Fourth Proportional to 72,939,745.20, 109,409,617.80 and 42,632,007.60

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Solution

The fourth proportional to 72,939,745.20, 109,409,617.80 and 42,632,007.60 is: 63,948,011.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,939,745.20 : 109,409,617.80 = 42,632,007.60 : x
  2. Step 2: Convert to fraction form
    72,939,745.20/109,409,617.80 = 42,632,007.60/x
  3. Step 3: Cross multiply
    72,939,745.20x = 109,409,617.80 × 42,632,007.60
  4. Step 4: Simplify right side
    72,939,745.20x = 4,664,351,657,562,695
  5. Step 5: Solve for x
    x = 4,664,351,657,562,695/72,939,745.20
  6. Step 6: Final answer
    x = 63,948,011.40

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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.