Home / 79,081,994.90-118,640,879.28-42,689,604.12

Finding the Fourth Proportional to 79,081,994.90, 118,640,879.28 and 42,689,604.12

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Solution

The fourth proportional to 79,081,994.90, 118,640,879.28 and 42,689,604.12 is: 64,044,061.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,081,994.90 : 118,640,879.28 = 42,689,604.12 : x
  2. Step 2: Convert to fraction form
    79,081,994.90/118,640,879.28 = 42,689,604.12/x
  3. Step 3: Cross multiply
    79,081,994.90x = 118,640,879.28 × 42,689,604.12
  4. Step 4: Simplify right side
    79,081,994.90x = 5,064,732,168,911,910
  5. Step 5: Solve for x
    x = 5,064,732,168,911,910/79,081,994.90
  6. Step 6: Final answer
    x = 64,044,061.80

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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.