Home / 72,761,346.80-109,142,020.20-43,661,999.60

Finding the Fourth Proportional to 72,761,346.80, 109,142,020.20 and 43,661,999.60

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Solution

The fourth proportional to 72,761,346.80, 109,142,020.20 and 43,661,999.60 is: 65,492,999.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,761,346.80 : 109,142,020.20 = 43,661,999.60 : x
  2. Step 2: Convert to fraction form
    72,761,346.80/109,142,020.20 = 43,661,999.60/x
  3. Step 3: Cross multiply
    72,761,346.80x = 109,142,020.20 × 43,661,999.60
  4. Step 4: Simplify right side
    72,761,346.80x = 4,765,358,842,315,592
  5. Step 5: Solve for x
    x = 4,765,358,842,315,592/72,761,346.80
  6. Step 6: Final answer
    x = 65,492,999.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.