Home / 57,158.80-78,878.26-31,665.08

Finding the Fourth Proportional to 57,158.80, 78,878.26 and 31,665.08

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Solution

The fourth proportional to 57,158.80, 78,878.26 and 31,665.08 is: 43,697.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,158.80 : 78,878.26 = 31,665.08 : x
  2. Step 2: Convert to fraction form
    57,158.80/78,878.26 = 31,665.08/x
  3. Step 3: Cross multiply
    57,158.80x = 78,878.26 × 31,665.08
  4. Step 4: Simplify right side
    57,158.80x = 2,497,686,413.16
  5. Step 5: Solve for x
    x = 2,497,686,413.16/57,158.80
  6. Step 6: Final answer
    x = 43,697.32

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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.