Home / 42,897.79-64,320.63-19,200.84

Finding the Fourth Proportional to 42,897.79, 64,320.63 and 19,200.84

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Solution

The fourth proportional to 42,897.79, 64,320.63 and 19,200.84 is: 28,789.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,897.79 : 64,320.63 = 19,200.84 : x
  2. Step 2: Convert to fraction form
    42,897.79/64,320.63 = 19,200.84/x
  3. Step 3: Cross multiply
    42,897.79x = 64,320.63 × 19,200.84
  4. Step 4: Simplify right side
    42,897.79x = 1,235,010,125.33
  5. Step 5: Solve for x
    x = 1,235,010,125.33/42,897.79
  6. Step 6: Final answer
    x = 28,789.60

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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.