Home / 72,122.04-99,532.34-40,290.88

Finding the Fourth Proportional to 72,122.04, 99,532.34 and 40,290.88

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Solution

The fourth proportional to 72,122.04, 99,532.34 and 40,290.88 is: 55,603.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,122.04 : 99,532.34 = 40,290.88 : x
  2. Step 2: Convert to fraction form
    72,122.04/99,532.34 = 40,290.88/x
  3. Step 3: Cross multiply
    72,122.04x = 99,532.34 × 40,290.88
  4. Step 4: Simplify right side
    72,122.04x = 4,010,245,567.06
  5. Step 5: Solve for x
    x = 4,010,245,567.06/72,122.04
  6. Step 6: Final answer
    x = 55,603.61

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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.