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Finding the Fourth Proportional to 85,834,879.80, 128,752,319.70 and 37,335,967.80

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Solution

The fourth proportional to 85,834,879.80, 128,752,319.70 and 37,335,967.80 is: 56,003,951.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,834,879.80 : 128,752,319.70 = 37,335,967.80 : x
  2. Step 2: Convert to fraction form
    85,834,879.80/128,752,319.70 = 37,335,967.80/x
  3. Step 3: Cross multiply
    85,834,879.80x = 128,752,319.70 × 37,335,967.80
  4. Step 4: Simplify right side
    85,834,879.80x = 4,807,092,462,494,505
  5. Step 5: Solve for x
    x = 4,807,092,462,494,505/85,834,879.80
  6. Step 6: Final answer
    x = 56,003,951.70

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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.