Home / 57,017.50-78,681.68-31,175.58

Finding the Fourth Proportional to 57,017.50, 78,681.68 and 31,175.58

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Solution

The fourth proportional to 57,017.50, 78,681.68 and 31,175.58 is: 43,020.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,017.50 : 78,681.68 = 31,175.58 : x
  2. Step 2: Convert to fraction form
    57,017.50/78,681.68 = 31,175.58/x
  3. Step 3: Cross multiply
    57,017.50x = 78,681.68 × 31,175.58
  4. Step 4: Simplify right side
    57,017.50x = 2,452,946,460.09
  5. Step 5: Solve for x
    x = 2,452,946,460.09/57,017.50
  6. Step 6: Final answer
    x = 43,020.94

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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.