Home / 81,577.14-112,667.67-56,161.50

Finding the Fourth Proportional to 81,577.14, 112,667.67 and 56,161.50

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Solution

The fourth proportional to 81,577.14, 112,667.67 and 56,161.50 is: 77,565.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,577.14 : 112,667.67 = 56,161.50 : x
  2. Step 2: Convert to fraction form
    81,577.14/112,667.67 = 56,161.50/x
  3. Step 3: Cross multiply
    81,577.14x = 112,667.67 × 56,161.50
  4. Step 4: Simplify right side
    81,577.14x = 6,327,585,348.71
  5. Step 5: Solve for x
    x = 6,327,585,348.71/81,577.14
  6. Step 6: Final answer
    x = 77,565.67

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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.