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Finding the Fourth Proportional to 84,607,581.60, 126,920,703.60 and 27,090,064.80

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Solution

The fourth proportional to 84,607,581.60, 126,920,703.60 and 27,090,064.80 is: 40,638,084.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,607,581.60 : 126,920,703.60 = 27,090,064.80 : x
  2. Step 2: Convert to fraction form
    84,607,581.60/126,920,703.60 = 27,090,064.80/x
  3. Step 3: Cross multiply
    84,607,581.60x = 126,920,703.60 × 27,090,064.80
  4. Step 4: Simplify right side
    84,607,581.60x = 3,438,290,084,985,593
  5. Step 5: Solve for x
    x = 3,438,290,084,985,593/84,607,581.60
  6. Step 6: Final answer
    x = 40,638,084.91

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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.