Home / 57,185.80-78,915.45-31,344.10

Finding the Fourth Proportional to 57,185.80, 78,915.45 and 31,344.10

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Solution

The fourth proportional to 57,185.80, 78,915.45 and 31,344.10 is: 43,254.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,185.80 : 78,915.45 = 31,344.10 : x
  2. Step 2: Convert to fraction form
    57,185.80/78,915.45 = 31,344.10/x
  3. Step 3: Cross multiply
    57,185.80x = 78,915.45 × 31,344.10
  4. Step 4: Simplify right side
    57,185.80x = 2,473,533,756.35
  5. Step 5: Solve for x
    x = 2,473,533,756.35/57,185.80
  6. Step 6: Final answer
    x = 43,254.34

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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.