Home / 57,108.93-78,809.16-31,615.29

Finding the Fourth Proportional to 57,108.93, 78,809.16 and 31,615.29

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Solution

The fourth proportional to 57,108.93, 78,809.16 and 31,615.29 is: 43,628.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,108.93 : 78,809.16 = 31,615.29 : x
  2. Step 2: Convert to fraction form
    57,108.93/78,809.16 = 31,615.29/x
  3. Step 3: Cross multiply
    57,108.93x = 78,809.16 × 31,615.29
  4. Step 4: Simplify right side
    57,108.93x = 2,491,574,448.06
  5. Step 5: Solve for x
    x = 2,491,574,448.06/57,108.93
  6. Step 6: Final answer
    x = 43,628.46

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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.