Home / 42,686,984.65-64,020,893.78-19,635,780.48

Finding the Fourth Proportional to 42,686,984.65, 64,020,893.78 and 19,635,780.48

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Solution

The fourth proportional to 42,686,984.65, 64,020,893.78 and 19,635,780.48 is: 29,449,262.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,686,984.65 : 64,020,893.78 = 19,635,780.48 : x
  2. Step 2: Convert to fraction form
    42,686,984.65/64,020,893.78 = 19,635,780.48/x
  3. Step 3: Cross multiply
    42,686,984.65x = 64,020,893.78 × 19,635,780.48
  4. Step 4: Simplify right side
    42,686,984.65x = 1,257,100,215,979,194
  5. Step 5: Solve for x
    x = 1,257,100,215,979,194/42,686,984.65
  6. Step 6: Final answer
    x = 29,449,262.50

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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.