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Finding the Fourth Proportional to 21,102,000.90, 29,609,985.90 and 21,102,000.90

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Solution

The fourth proportional to 21,102,000.90, 29,609,985.90 and 21,102,000.90 is: 29,609,985.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,102,000.90 : 29,609,985.90 = 21,102,000.90 : x
  2. Step 2: Convert to fraction form
    21,102,000.90/29,609,985.90 = 21,102,000.90/x
  3. Step 3: Cross multiply
    21,102,000.90x = 29,609,985.90 × 21,102,000.90
  4. Step 4: Simplify right side
    21,102,000.90x = 624,829,949,110,787.25
  5. Step 5: Solve for x
    x = 624,829,949,110,787.25/21,102,000.90
  6. Step 6: Final answer
    x = 29,609,985.90

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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.