Home / 78,899,440.80-118,265,180.40-30,358,538.40

Finding the Fourth Proportional to 78,899,440.80, 118,265,180.40 and 30,358,538.40

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Solution

The fourth proportional to 78,899,440.80, 118,265,180.40 and 30,358,538.40 is: 45,505,493.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,899,440.80 : 118,265,180.40 = 30,358,538.40 : x
  2. Step 2: Convert to fraction form
    78,899,440.80/118,265,180.40 = 30,358,538.40/x
  3. Step 3: Cross multiply
    78,899,440.80x = 118,265,180.40 × 30,358,538.40
  4. Step 4: Simplify right side
    78,899,440.80x = 3,590,358,020,556,327.50
  5. Step 5: Solve for x
    x = 3,590,358,020,556,327.50/78,899,440.80
  6. Step 6: Final answer
    x = 45,505,493.88

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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.