Home / 72,768,029.40-109,152,044.10-71,333,138.70

Finding the Fourth Proportional to 72,768,029.40, 109,152,044.10 and 71,333,138.70

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Solution

The fourth proportional to 72,768,029.40, 109,152,044.10 and 71,333,138.70 is: 106,999,708.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,768,029.40 : 109,152,044.10 = 71,333,138.70 : x
  2. Step 2: Convert to fraction form
    72,768,029.40/109,152,044.10 = 71,333,138.70/x
  3. Step 3: Cross multiply
    72,768,029.40x = 109,152,044.10 × 71,333,138.70
  4. Step 4: Simplify right side
    72,768,029.40x = 7,786,157,901,173,817
  5. Step 5: Solve for x
    x = 7,786,157,901,173,817/72,768,029.40
  6. Step 6: Final answer
    x = 106,999,708.05

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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.