Home / 79,081,999.40-118,640,886.03-42,689,608.62

Finding the Fourth Proportional to 79,081,999.40, 118,640,886.03 and 42,689,608.62

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Solution

The fourth proportional to 79,081,999.40, 118,640,886.03 and 42,689,608.62 is: 64,044,068.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,081,999.40 : 118,640,886.03 = 42,689,608.62 : x
  2. Step 2: Convert to fraction form
    79,081,999.40/118,640,886.03 = 42,689,608.62/x
  3. Step 3: Cross multiply
    79,081,999.40x = 118,640,886.03 × 42,689,608.62
  4. Step 4: Simplify right side
    79,081,999.40x = 5,064,732,990,950,725
  5. Step 5: Solve for x
    x = 5,064,732,990,950,725/79,081,999.40
  6. Step 6: Final answer
    x = 64,044,068.55

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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.