Home / 71,904.54-99,228.77-40,075.49

Finding the Fourth Proportional to 71,904.54, 99,228.77 and 40,075.49

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Solution

The fourth proportional to 71,904.54, 99,228.77 and 40,075.49 is: 55,304.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,904.54 : 99,228.77 = 40,075.49 : x
  2. Step 2: Convert to fraction form
    71,904.54/99,228.77 = 40,075.49/x
  3. Step 3: Cross multiply
    71,904.54x = 99,228.77 × 40,075.49
  4. Step 4: Simplify right side
    71,904.54x = 3,976,641,255.43
  5. Step 5: Solve for x
    x = 3,976,641,255.43/71,904.54
  6. Step 6: Final answer
    x = 55,304.45

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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.