Home / 56,820.79-78,413.21-31,328.07

Finding the Fourth Proportional to 56,820.79, 78,413.21 and 31,328.07

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Solution

The fourth proportional to 56,820.79, 78,413.21 and 31,328.07 is: 43,233.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,820.79 : 78,413.21 = 31,328.07 : x
  2. Step 2: Convert to fraction form
    56,820.79/78,413.21 = 31,328.07/x
  3. Step 3: Cross multiply
    56,820.79x = 78,413.21 × 31,328.07
  4. Step 4: Simplify right side
    56,820.79x = 2,456,534,531.80
  5. Step 5: Solve for x
    x = 2,456,534,531.80/56,820.79
  6. Step 6: Final answer
    x = 43,233.02

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1.5x scale

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.