Home / 51,681.54-71,321.40-28,710.76

Finding the Fourth Proportional to 51,681.54, 71,321.40 and 28,710.76

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Solution

The fourth proportional to 51,681.54, 71,321.40 and 28,710.76 is: 39,621.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,681.54 : 71,321.40 = 28,710.76 : x
  2. Step 2: Convert to fraction form
    51,681.54/71,321.40 = 28,710.76/x
  3. Step 3: Cross multiply
    51,681.54x = 71,321.40 × 28,710.76
  4. Step 4: Simplify right side
    51,681.54x = 2,047,691,598.26
  5. Step 5: Solve for x
    x = 2,047,691,598.26/51,681.54
  6. Step 6: Final answer
    x = 39,621.33

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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.