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Finding the Fourth Proportional to 71,314.80, 98,415.60 and 39,048.90

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Solution

The fourth proportional to 71,314.80, 98,415.60 and 39,048.90 is: 53,888.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,314.80 : 98,415.60 = 39,048.90 : x
  2. Step 2: Convert to fraction form
    71,314.80/98,415.60 = 39,048.90/x
  3. Step 3: Cross multiply
    71,314.80x = 98,415.60 × 39,048.90
  4. Step 4: Simplify right side
    71,314.80x = 3,843,020,922.84
  5. Step 5: Solve for x
    x = 3,843,020,922.84/71,314.80
  6. Step 6: Final answer
    x = 53,888.13

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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.