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Finding the Fourth Proportional to 21,830,440.35, 30,607,406.25 and 21,830,440.35

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Solution

The fourth proportional to 21,830,440.35, 30,607,406.25 and 21,830,440.35 is: 30,607,406.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,830,440.35 : 30,607,406.25 = 21,830,440.35 : x
  2. Step 2: Convert to fraction form
    21,830,440.35/30,607,406.25 = 21,830,440.35/x
  3. Step 3: Cross multiply
    21,830,440.35x = 30,607,406.25 × 21,830,440.35
  4. Step 4: Simplify right side
    21,830,440.35x = 668,173,156,408,842.25
  5. Step 5: Solve for x
    x = 668,173,156,408,842.25/21,830,440.35
  6. Step 6: Final answer
    x = 30,607,406.25

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.