Home / 42,012.87-57,980.36-23,149.95

Finding the Fourth Proportional to 42,012.87, 57,980.36 and 23,149.95

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Solution

The fourth proportional to 42,012.87, 57,980.36 and 23,149.95 is: 31,948.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,012.87 : 57,980.36 = 23,149.95 : x
  2. Step 2: Convert to fraction form
    42,012.87/57,980.36 = 23,149.95/x
  3. Step 3: Cross multiply
    42,012.87x = 57,980.36 × 23,149.95
  4. Step 4: Simplify right side
    42,012.87x = 1,342,242,319.23
  5. Step 5: Solve for x
    x = 1,342,242,319.23/42,012.87
  6. Step 6: Final answer
    x = 31,948.36

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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.