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Finding the Fourth Proportional to 77,907.20, 116,918.40 and 51,603.20

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Solution

The fourth proportional to 77,907.20, 116,918.40 and 51,603.20 is: 77,442.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,907.20 : 116,918.40 = 51,603.20 : x
  2. Step 2: Convert to fraction form
    77,907.20/116,918.40 = 51,603.20/x
  3. Step 3: Cross multiply
    77,907.20x = 116,918.40 × 51,603.20
  4. Step 4: Simplify right side
    77,907.20x = 6,033,363,578.88
  5. Step 5: Solve for x
    x = 6,033,363,578.88/77,907.20
  6. Step 6: Final answer
    x = 77,442.95

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1.5x scale

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.