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Finding the Fourth Proportional to 65,786,775.89, 90,786,469.01 and 36,418,599

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Solution

The fourth proportional to 65,786,775.89, 90,786,469.01 and 36,418,599 is: 50,258,064.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,786,775.89 : 90,786,469.01 = 36,418,599 : x
  2. Step 2: Convert to fraction form
    65,786,775.89/90,786,469.01 = 36,418,599/x
  3. Step 3: Cross multiply
    65,786,775.89x = 90,786,469.01 × 36,418,599
  4. Step 4: Simplify right side
    65,786,775.89x = 3,306,316,009,319,024
  5. Step 5: Solve for x
    x = 3,306,316,009,319,024/65,786,775.89
  6. Step 6: Final answer
    x = 50,258,064.25

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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.