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Finding the Fourth Proportional to 65,776,661.84, 90,769,478.24 and 36,408,051.20

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Solution

The fourth proportional to 65,776,661.84, 90,769,478.24 and 36,408,051.20 is: 50,241,829.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,776,661.84 : 90,769,478.24 = 36,408,051.20 : x
  2. Step 2: Convert to fraction form
    65,776,661.84/90,769,478.24 = 36,408,051.20/x
  3. Step 3: Cross multiply
    65,776,661.84x = 90,769,478.24 × 36,408,051.20
  4. Step 4: Simplify right side
    65,776,661.84x = 3,304,739,811,159,206
  5. Step 5: Solve for x
    x = 3,304,739,811,159,206/65,776,661.84
  6. Step 6: Final answer
    x = 50,241,829.23

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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.