Home / 56,907.20-78,531.32-31,413.76

Finding the Fourth Proportional to 56,907.20, 78,531.32 and 31,413.76

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Solution

The fourth proportional to 56,907.20, 78,531.32 and 31,413.76 is: 43,350.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,907.20 : 78,531.32 = 31,413.76 : x
  2. Step 2: Convert to fraction form
    56,907.20/78,531.32 = 31,413.76/x
  3. Step 3: Cross multiply
    56,907.20x = 78,531.32 × 31,413.76
  4. Step 4: Simplify right side
    56,907.20x = 2,466,964,038.96
  5. Step 5: Solve for x
    x = 2,466,964,038.96/56,907.20
  6. Step 6: Final answer
    x = 43,350.65

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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.