Home / 78,418,042.80-117,627,064.20-46,085,434.80

Finding the Fourth Proportional to 78,418,042.80, 117,627,064.20 and 46,085,434.80

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Solution

The fourth proportional to 78,418,042.80, 117,627,064.20 and 46,085,434.80 is: 69,128,152.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,418,042.80 : 117,627,064.20 = 46,085,434.80 : x
  2. Step 2: Convert to fraction form
    78,418,042.80/117,627,064.20 = 46,085,434.80/x
  3. Step 3: Cross multiply
    78,418,042.80x = 117,627,064.20 × 46,085,434.80
  4. Step 4: Simplify right side
    78,418,042.80x = 5,420,894,397,904,514
  5. Step 5: Solve for x
    x = 5,420,894,397,904,514/78,418,042.80
  6. Step 6: Final answer
    x = 69,128,152.20

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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.