Home / 39,740.70-59,611.05-21,078.30

Finding the Fourth Proportional to 39,740.70, 59,611.05 and 21,078.30

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Solution

The fourth proportional to 39,740.70, 59,611.05 and 21,078.30 is: 31,617.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,740.70 : 59,611.05 = 21,078.30 : x
  2. Step 2: Convert to fraction form
    39,740.70/59,611.05 = 21,078.30/x
  3. Step 3: Cross multiply
    39,740.70x = 59,611.05 × 21,078.30
  4. Step 4: Simplify right side
    39,740.70x = 1,256,499,595.22
  5. Step 5: Solve for x
    x = 1,256,499,595.22/39,740.70
  6. Step 6: Final answer
    x = 31,617.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.