Home / 55,000.86-75,907.38-31,129.08

Finding the Fourth Proportional to 55,000.86, 75,907.38 and 31,129.08

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Solution

The fourth proportional to 55,000.86, 75,907.38 and 31,129.08 is: 42,961.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,000.86 : 75,907.38 = 31,129.08 : x
  2. Step 2: Convert to fraction form
    55,000.86/75,907.38 = 31,129.08/x
  3. Step 3: Cross multiply
    55,000.86x = 75,907.38 × 31,129.08
  4. Step 4: Simplify right side
    55,000.86x = 2,362,926,904.61
  5. Step 5: Solve for x
    x = 2,362,926,904.61/55,000.86
  6. Step 6: Final answer
    x = 42,961.64

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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.