Home / 77,564,580.82-107,039,866.64-42,758,516.79

Finding the Fourth Proportional to 77,564,580.82, 107,039,866.64 and 42,758,516.79

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Solution

The fourth proportional to 77,564,580.82, 107,039,866.64 and 42,758,516.79 is: 59,007,163.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,564,580.82 : 107,039,866.64 = 42,758,516.79 : x
  2. Step 2: Convert to fraction form
    77,564,580.82/107,039,866.64 = 42,758,516.79/x
  3. Step 3: Cross multiply
    77,564,580.82x = 107,039,866.64 × 42,758,516.79
  4. Step 4: Simplify right side
    77,564,580.82x = 4,576,865,934,712,008
  5. Step 5: Solve for x
    x = 4,576,865,934,712,008/77,564,580.82
  6. Step 6: Final answer
    x = 59,007,163.92

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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.