Home / 77,678,748.90-116,505,131.36-28,484,436.51

Finding the Fourth Proportional to 77,678,748.90, 116,505,131.36 and 28,484,436.51

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Solution

The fourth proportional to 77,678,748.90, 116,505,131.36 and 28,484,436.51 is: 42,721,890.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,678,748.90 : 116,505,131.36 = 28,484,436.51 : x
  2. Step 2: Convert to fraction form
    77,678,748.90/116,505,131.36 = 28,484,436.51/x
  3. Step 3: Cross multiply
    77,678,748.90x = 116,505,131.36 × 28,484,436.51
  4. Step 4: Simplify right side
    77,678,748.90x = 3,318,583,017,170,708
  5. Step 5: Solve for x
    x = 3,318,583,017,170,708/77,678,748.90
  6. Step 6: Final answer
    x = 42,721,890.66

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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.