Home / 71,669.40-98,899.48-39,837.20

Finding the Fourth Proportional to 71,669.40, 98,899.48 and 39,837.20

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Solution

The fourth proportional to 71,669.40, 98,899.48 and 39,837.20 is: 54,972.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,669.40 : 98,899.48 = 39,837.20 : x
  2. Step 2: Convert to fraction form
    71,669.40/98,899.48 = 39,837.20/x
  3. Step 3: Cross multiply
    71,669.40x = 98,899.48 × 39,837.20
  4. Step 4: Simplify right side
    71,669.40x = 3,939,878,364.66
  5. Step 5: Solve for x
    x = 3,939,878,364.66/71,669.40
  6. Step 6: Final answer
    x = 54,972.95

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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.