Home / 71,118.03-98,139.26-39,280.77

Finding the Fourth Proportional to 71,118.03, 98,139.26 and 39,280.77

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Solution

The fourth proportional to 71,118.03, 98,139.26 and 39,280.77 is: 54,205.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,118.03 : 98,139.26 = 39,280.77 : x
  2. Step 2: Convert to fraction form
    71,118.03/98,139.26 = 39,280.77/x
  3. Step 3: Cross multiply
    71,118.03x = 98,139.26 × 39,280.77
  4. Step 4: Simplify right side
    71,118.03x = 3,854,985,503.63
  5. Step 5: Solve for x
    x = 3,854,985,503.63/71,118.03
  6. Step 6: Final answer
    x = 54,205.46

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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.