Home / 57,121.61-78,830.53-34,460.12

Finding the Fourth Proportional to 57,121.61, 78,830.53 and 34,460.12

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Solution

The fourth proportional to 57,121.61, 78,830.53 and 34,460.12 is: 47,556.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,121.61 : 78,830.53 = 34,460.12 : x
  2. Step 2: Convert to fraction form
    57,121.61/78,830.53 = 34,460.12/x
  3. Step 3: Cross multiply
    57,121.61x = 78,830.53 × 34,460.12
  4. Step 4: Simplify right side
    57,121.61x = 2,716,509,312.12
  5. Step 5: Solve for x
    x = 2,716,509,312.12/57,121.61
  6. Step 6: Final answer
    x = 47,556.59

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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.