Home / 72,383,999.80-108,575,999.70-65,217,638.20

Finding the Fourth Proportional to 72,383,999.80, 108,575,999.70 and 65,217,638.20

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Solution

The fourth proportional to 72,383,999.80, 108,575,999.70 and 65,217,638.20 is: 97,826,457.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,383,999.80 : 108,575,999.70 = 65,217,638.20 : x
  2. Step 2: Convert to fraction form
    72,383,999.80/108,575,999.70 = 65,217,638.20/x
  3. Step 3: Cross multiply
    72,383,999.80x = 108,575,999.70 × 65,217,638.20
  4. Step 4: Simplify right side
    72,383,999.80x = 7,081,070,265,637,909
  5. Step 5: Solve for x
    x = 7,081,070,265,637,909/72,383,999.80
  6. Step 6: Final answer
    x = 97,826,457.30

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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.