Home / 72,674,887.20-109,071,817.20-72,108,016.80

Finding the Fourth Proportional to 72,674,887.20, 109,071,817.20 and 72,108,016.80

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Solution

The fourth proportional to 72,674,887.20, 109,071,817.20 and 72,108,016.80 is: 108,221,047.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,674,887.20 : 109,071,817.20 = 72,108,016.80 : x
  2. Step 2: Convert to fraction form
    72,674,887.20/109,071,817.20 = 72,108,016.80/x
  3. Step 3: Cross multiply
    72,674,887.20x = 109,071,817.20 × 72,108,016.80
  4. Step 4: Simplify right side
    72,674,887.20x = 7,864,952,427,064,129
  5. Step 5: Solve for x
    x = 7,864,952,427,064,129/72,674,887.20
  6. Step 6: Final answer
    x = 108,221,047.60

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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.