Home / 40,938.40-61,261.80-28,399.60

Finding the Fourth Proportional to 40,938.40, 61,261.80 and 28,399.60

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Solution

The fourth proportional to 40,938.40, 61,261.80 and 28,399.60 is: 42,498.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,938.40 : 61,261.80 = 28,399.60 : x
  2. Step 2: Convert to fraction form
    40,938.40/61,261.80 = 28,399.60/x
  3. Step 3: Cross multiply
    40,938.40x = 61,261.80 × 28,399.60
  4. Step 4: Simplify right side
    40,938.40x = 1,739,810,615.28
  5. Step 5: Solve for x
    x = 1,739,810,615.28/40,938.40
  6. Step 6: Final answer
    x = 42,498.26

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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.