Home / 78,899,441.30-118,265,181.15-30,358,538.90

Finding the Fourth Proportional to 78,899,441.30, 118,265,181.15 and 30,358,538.90

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Solution

The fourth proportional to 78,899,441.30, 118,265,181.15 and 30,358,538.90 is: 45,505,494.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,899,441.30 : 118,265,181.15 = 30,358,538.90 : x
  2. Step 2: Convert to fraction form
    78,899,441.30/118,265,181.15 = 30,358,538.90/x
  3. Step 3: Cross multiply
    78,899,441.30x = 118,265,181.15 × 30,358,538.90
  4. Step 4: Simplify right side
    78,899,441.30x = 3,590,358,102,457,821.50
  5. Step 5: Solve for x
    x = 3,590,358,102,457,821.50/78,899,441.30
  6. Step 6: Final answer
    x = 45,505,494.63

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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.