Home / 77,742.60-116,557.78-30,317.50

Finding the Fourth Proportional to 77,742.60, 116,557.78 and 30,317.50

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Solution

The fourth proportional to 77,742.60, 116,557.78 and 30,317.50 is: 45,454.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,742.60 : 116,557.78 = 30,317.50 : x
  2. Step 2: Convert to fraction form
    77,742.60/116,557.78 = 30,317.50/x
  3. Step 3: Cross multiply
    77,742.60x = 116,557.78 × 30,317.50
  4. Step 4: Simplify right side
    77,742.60x = 3,533,740,495.15
  5. Step 5: Solve for x
    x = 3,533,740,495.15/77,742.60
  6. Step 6: Final answer
    x = 45,454.36

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.