Home / 42,678.28-64,051.66-19,306.76

Finding the Fourth Proportional to 42,678.28, 64,051.66 and 19,306.76

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Solution

The fourth proportional to 42,678.28, 64,051.66 and 19,306.76 is: 28,975.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,678.28 : 64,051.66 = 19,306.76 : x
  2. Step 2: Convert to fraction form
    42,678.28/64,051.66 = 19,306.76/x
  3. Step 3: Cross multiply
    42,678.28x = 64,051.66 × 19,306.76
  4. Step 4: Simplify right side
    42,678.28x = 1,236,630,027.22
  5. Step 5: Solve for x
    x = 1,236,630,027.22/42,678.28
  6. Step 6: Final answer
    x = 28,975.63

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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.