Home / 57,090.09-78,784.46-31,598.21

Finding the Fourth Proportional to 57,090.09, 78,784.46 and 31,598.21

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Solution

The fourth proportional to 57,090.09, 78,784.46 and 31,598.21 is: 43,605.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,090.09 : 78,784.46 = 31,598.21 : x
  2. Step 2: Convert to fraction form
    57,090.09/78,784.46 = 31,598.21/x
  3. Step 3: Cross multiply
    57,090.09x = 78,784.46 × 31,598.21
  4. Step 4: Simplify right side
    57,090.09x = 2,489,447,359.90
  5. Step 5: Solve for x
    x = 2,489,447,359.90/57,090.09
  6. Step 6: Final answer
    x = 43,605.60

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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.