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Finding the Fourth Proportional to 85,523,978.88, 118,035,869.76 and 67,326,203.52

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Solution

The fourth proportional to 85,523,978.88, 118,035,869.76 and 67,326,203.52 is: 92,920,220.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,523,978.88 : 118,035,869.76 = 67,326,203.52 : x
  2. Step 2: Convert to fraction form
    85,523,978.88/118,035,869.76 = 67,326,203.52/x
  3. Step 3: Cross multiply
    85,523,978.88x = 118,035,869.76 × 67,326,203.52
  4. Step 4: Simplify right side
    85,523,978.88x = 7,946,906,990,121,973
  5. Step 5: Solve for x
    x = 7,946,906,990,121,973/85,523,978.88
  6. Step 6: Final answer
    x = 92,920,220.67

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.