Home / 72,293,121.20-99,763,485.81-40,930,360.90

Finding the Fourth Proportional to 72,293,121.20, 99,763,485.81 and 40,930,360.90

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Solution

The fourth proportional to 72,293,121.20, 99,763,485.81 and 40,930,360.90 is: 56,483,319.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,293,121.20 : 99,763,485.81 = 40,930,360.90 : x
  2. Step 2: Convert to fraction form
    72,293,121.20/99,763,485.81 = 40,930,360.90/x
  3. Step 3: Cross multiply
    72,293,121.20x = 99,763,485.81 × 40,930,360.90
  4. Step 4: Simplify right side
    72,293,121.20x = 4,083,355,478,442,431.50
  5. Step 5: Solve for x
    x = 4,083,355,478,442,431.50/72,293,121.20
  6. Step 6: Final answer
    x = 56,483,319.72

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.