Home / 56,918.72-85,438.20-31,980.08

Finding the Fourth Proportional to 56,918.72, 85,438.20 and 31,980.08

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Solution

The fourth proportional to 56,918.72, 85,438.20 and 31,980.08 is: 48,003.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,918.72 : 85,438.20 = 31,980.08 : x
  2. Step 2: Convert to fraction form
    56,918.72/85,438.20 = 31,980.08/x
  3. Step 3: Cross multiply
    56,918.72x = 85,438.20 × 31,980.08
  4. Step 4: Simplify right side
    56,918.72x = 2,732,320,471.06
  5. Step 5: Solve for x
    x = 2,732,320,471.06/56,918.72
  6. Step 6: Final answer
    x = 48,003.90

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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.