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Finding the Fourth Proportional to 21,140,058.40, 29,663,266.40 and 21,140,058.40

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Solution

The fourth proportional to 21,140,058.40, 29,663,266.40 and 21,140,058.40 is: 29,663,266.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,140,058.40 : 29,663,266.40 = 21,140,058.40 : x
  2. Step 2: Convert to fraction form
    21,140,058.40/29,663,266.40 = 21,140,058.40/x
  3. Step 3: Cross multiply
    21,140,058.40x = 29,663,266.40 × 21,140,058.40
  4. Step 4: Simplify right side
    21,140,058.40x = 627,083,184,030,757.62
  5. Step 5: Solve for x
    x = 627,083,184,030,757.62/21,140,058.40
  6. Step 6: Final answer
    x = 29,663,266.40

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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.