Home / 77,972,686.89-107,598,045-42,683,665.31

Finding the Fourth Proportional to 77,972,686.89, 107,598,045 and 42,683,665.31

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Solution

The fourth proportional to 77,972,686.89, 107,598,045 and 42,683,665.31 is: 58,901,124.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,972,686.89 : 107,598,045 = 42,683,665.31 : x
  2. Step 2: Convert to fraction form
    77,972,686.89/107,598,045 = 42,683,665.31/x
  3. Step 3: Cross multiply
    77,972,686.89x = 107,598,045 × 42,683,665.31
  4. Step 4: Simplify right side
    77,972,686.89x = 4,592,678,940,252,329
  5. Step 5: Solve for x
    x = 4,592,678,940,252,329/77,972,686.89
  6. Step 6: Final answer
    x = 58,901,124.53

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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.