Home / 71,680.02-98,920.96-39,417.08

Finding the Fourth Proportional to 71,680.02, 98,920.96 and 39,417.08

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Solution

The fourth proportional to 71,680.02, 98,920.96 and 39,417.08 is: 54,396.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,680.02 : 98,920.96 = 39,417.08 : x
  2. Step 2: Convert to fraction form
    71,680.02/98,920.96 = 39,417.08/x
  3. Step 3: Cross multiply
    71,680.02x = 98,920.96 × 39,417.08
  4. Step 4: Simplify right side
    71,680.02x = 3,899,175,394.00
  5. Step 5: Solve for x
    x = 3,899,175,394.00/71,680.02
  6. Step 6: Final answer
    x = 54,396.96

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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.