Home / 60,439.21-90,675.83-21,000.31

Finding the Fourth Proportional to 60,439.21, 90,675.83 and 21,000.31

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Solution

The fourth proportional to 60,439.21, 90,675.83 and 21,000.31 is: 31,506.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,439.21 : 90,675.83 = 21,000.31 : x
  2. Step 2: Convert to fraction form
    60,439.21/90,675.83 = 21,000.31/x
  3. Step 3: Cross multiply
    60,439.21x = 90,675.83 × 21,000.31
  4. Step 4: Simplify right side
    60,439.21x = 1,904,220,434.51
  5. Step 5: Solve for x
    x = 1,904,220,434.51/60,439.21
  6. Step 6: Final answer
    x = 31,506.38

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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.