Home / 78,671.12-117,812.40-58,632.56

Finding the Fourth Proportional to 78,671.12, 117,812.40 and 58,632.56

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Solution

The fourth proportional to 78,671.12, 117,812.40 and 58,632.56 is: 87,804.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,671.12 : 117,812.40 = 58,632.56 : x
  2. Step 2: Convert to fraction form
    78,671.12/117,812.40 = 58,632.56/x
  3. Step 3: Cross multiply
    78,671.12x = 117,812.40 × 58,632.56
  4. Step 4: Simplify right side
    78,671.12x = 6,907,642,611.74
  5. Step 5: Solve for x
    x = 6,907,642,611.74/78,671.12
  6. Step 6: Final answer
    x = 87,804.05

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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.