Home / 78,755,439.30-118,097,729.55-30,217,161.30

Finding the Fourth Proportional to 78,755,439.30, 118,097,729.55 and 30,217,161.30

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Solution

The fourth proportional to 78,755,439.30, 118,097,729.55 and 30,217,161.30 is: 45,312,148.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,755,439.30 : 118,097,729.55 = 30,217,161.30 : x
  2. Step 2: Convert to fraction form
    78,755,439.30/118,097,729.55 = 30,217,161.30/x
  3. Step 3: Cross multiply
    78,755,439.30x = 118,097,729.55 × 30,217,161.30
  4. Step 4: Simplify right side
    78,755,439.30x = 3,568,578,142,976,126.50
  5. Step 5: Solve for x
    x = 3,568,578,142,976,126.50/78,755,439.30
  6. Step 6: Final answer
    x = 45,312,148.27

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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.