Home / 76,636,769.79-115,005,926.12-42,117,277.97

Finding the Fourth Proportional to 76,636,769.79, 115,005,926.12 and 42,117,277.97

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Solution

The fourth proportional to 76,636,769.79, 115,005,926.12 and 42,117,277.97 is: 63,203,819.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,636,769.79 : 115,005,926.12 = 42,117,277.97 : x
  2. Step 2: Convert to fraction form
    76,636,769.79/115,005,926.12 = 42,117,277.97/x
  3. Step 3: Cross multiply
    76,636,769.79x = 115,005,926.12 × 42,117,277.97
  4. Step 4: Simplify right side
    76,636,769.79x = 4,843,736,558,670,251
  5. Step 5: Solve for x
    x = 4,843,736,558,670,251/76,636,769.79
  6. Step 6: Final answer
    x = 63,203,819.42

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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.