Home / 77,972,678.05-107,598,032.79-42,683,656.45

Finding the Fourth Proportional to 77,972,678.05, 107,598,032.79 and 42,683,656.45

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Solution

The fourth proportional to 77,972,678.05, 107,598,032.79 and 42,683,656.45 is: 58,901,112.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,972,678.05 : 107,598,032.79 = 42,683,656.45 : x
  2. Step 2: Convert to fraction form
    77,972,678.05/107,598,032.79 = 42,683,656.45/x
  3. Step 3: Cross multiply
    77,972,678.05x = 107,598,032.79 × 42,683,656.45
  4. Step 4: Simplify right side
    77,972,678.05x = 4,592,677,466,304,196
  5. Step 5: Solve for x
    x = 4,592,677,466,304,196/77,972,678.05
  6. Step 6: Final answer
    x = 58,901,112.30

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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.