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Finding the Fourth Proportional to 68,985,878.40, 103,478,817.60 and 58,727,098.80

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Solution

The fourth proportional to 68,985,878.40, 103,478,817.60 and 58,727,098.80 is: 88,090,648.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,985,878.40 : 103,478,817.60 = 58,727,098.80 : x
  2. Step 2: Convert to fraction form
    68,985,878.40/103,478,817.60 = 58,727,098.80/x
  3. Step 3: Cross multiply
    68,985,878.40x = 103,478,817.60 × 58,727,098.80
  4. Step 4: Simplify right side
    68,985,878.40x = 6,077,010,744,902,378
  5. Step 5: Solve for x
    x = 6,077,010,744,902,378/68,985,878.40
  6. Step 6: Final answer
    x = 88,090,648.20

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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.