Home / 72,435,659.40-108,653,489.10-43,666,986.60

Finding the Fourth Proportional to 72,435,659.40, 108,653,489.10 and 43,666,986.60

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Solution

The fourth proportional to 72,435,659.40, 108,653,489.10 and 43,666,986.60 is: 65,500,479.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,435,659.40 : 108,653,489.10 = 43,666,986.60 : x
  2. Step 2: Convert to fraction form
    72,435,659.40/108,653,489.10 = 43,666,986.60/x
  3. Step 3: Cross multiply
    72,435,659.40x = 108,653,489.10 × 43,666,986.60
  4. Step 4: Simplify right side
    72,435,659.40x = 4,744,570,452,572,946
  5. Step 5: Solve for x
    x = 4,744,570,452,572,946/72,435,659.40
  6. Step 6: Final answer
    x = 65,500,479.90

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Similar ratio
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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.