Home / 72,171,221.40-108,256,832.10-56,865,720.60

Finding the Fourth Proportional to 72,171,221.40, 108,256,832.10 and 56,865,720.60

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Solution

The fourth proportional to 72,171,221.40, 108,256,832.10 and 56,865,720.60 is: 85,298,580.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,171,221.40 : 108,256,832.10 = 56,865,720.60 : x
  2. Step 2: Convert to fraction form
    72,171,221.40/108,256,832.10 = 56,865,720.60/x
  3. Step 3: Cross multiply
    72,171,221.40x = 108,256,832.10 × 56,865,720.60
  4. Step 4: Simplify right side
    72,171,221.40x = 6,156,102,767,239,711
  5. Step 5: Solve for x
    x = 6,156,102,767,239,711/72,171,221.40
  6. Step 6: Final answer
    x = 85,298,580.90

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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.