Home / 77,376,060-106,778,960.64-42,568,001.28

Finding the Fourth Proportional to 77,376,060, 106,778,960.64 and 42,568,001.28

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Solution

The fourth proportional to 77,376,060, 106,778,960.64 and 42,568,001.28 is: 58,743,840.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,376,060 : 106,778,960.64 = 42,568,001.28 : x
  2. Step 2: Convert to fraction form
    77,376,060/106,778,960.64 = 42,568,001.28/x
  3. Step 3: Cross multiply
    77,376,060x = 106,778,960.64 × 42,568,001.28
  4. Step 4: Simplify right side
    77,376,060x = 4,545,366,933,200,590
  5. Step 5: Solve for x
    x = 4,545,366,933,200,590/77,376,060
  6. Step 6: Final answer
    x = 58,743,840.58

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.