Home / 71,261.44-98,339.40-39,430.34

Finding the Fourth Proportional to 71,261.44, 98,339.40 and 39,430.34

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Solution

The fourth proportional to 71,261.44, 98,339.40 and 39,430.34 is: 54,413.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,261.44 : 98,339.40 = 39,430.34 : x
  2. Step 2: Convert to fraction form
    71,261.44/98,339.40 = 39,430.34/x
  3. Step 3: Cross multiply
    71,261.44x = 98,339.40 × 39,430.34
  4. Step 4: Simplify right side
    71,261.44x = 3,877,555,977.40
  5. Step 5: Solve for x
    x = 3,877,555,977.40/71,261.44
  6. Step 6: Final answer
    x = 54,413.10

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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.