Home / 77,280.67-115,962.05-30,533.95

Finding the Fourth Proportional to 77,280.67, 115,962.05 and 30,533.95

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Solution

The fourth proportional to 77,280.67, 115,962.05 and 30,533.95 is: 45,817.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,280.67 : 115,962.05 = 30,533.95 : x
  2. Step 2: Convert to fraction form
    77,280.67/115,962.05 = 30,533.95/x
  3. Step 3: Cross multiply
    77,280.67x = 115,962.05 × 30,533.95
  4. Step 4: Simplify right side
    77,280.67x = 3,540,779,436.60
  5. Step 5: Solve for x
    x = 3,540,779,436.60/77,280.67
  6. Step 6: Final answer
    x = 45,817.14

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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.