Home / 72,615,999.40-108,923,999.10-64,679,813.80

Finding the Fourth Proportional to 72,615,999.40, 108,923,999.10 and 64,679,813.80

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Solution

The fourth proportional to 72,615,999.40, 108,923,999.10 and 64,679,813.80 is: 97,019,720.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,615,999.40 : 108,923,999.10 = 64,679,813.80 : x
  2. Step 2: Convert to fraction form
    72,615,999.40/108,923,999.10 = 64,679,813.80/x
  3. Step 3: Cross multiply
    72,615,999.40x = 108,923,999.10 × 64,679,813.80
  4. Step 4: Simplify right side
    72,615,999.40x = 7,045,183,980,139,367
  5. Step 5: Solve for x
    x = 7,045,183,980,139,367/72,615,999.40
  6. Step 6: Final answer
    x = 97,019,720.70

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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.