Home / 115,677.70-159,638.50-64,692.35

Finding the Fourth Proportional to 115,677.70, 159,638.50 and 64,692.35

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Solution

The fourth proportional to 115,677.70, 159,638.50 and 64,692.35 is: 89,277.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,677.70 : 159,638.50 = 64,692.35 : x
  2. Step 2: Convert to fraction form
    115,677.70/159,638.50 = 64,692.35/x
  3. Step 3: Cross multiply
    115,677.70x = 159,638.50 × 64,692.35
  4. Step 4: Simplify right side
    115,677.70x = 10,327,389,715.48
  5. Step 5: Solve for x
    x = 10,327,389,715.48/115,677.70
  6. Step 6: Final answer
    x = 89,277.28

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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.