Home / 42,663.28-64,029.16-19,291.76

Finding the Fourth Proportional to 42,663.28, 64,029.16 and 19,291.76

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Solution

The fourth proportional to 42,663.28, 64,029.16 and 19,291.76 is: 28,953.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,663.28 : 64,029.16 = 19,291.76 : x
  2. Step 2: Convert to fraction form
    42,663.28/64,029.16 = 19,291.76/x
  3. Step 3: Cross multiply
    42,663.28x = 64,029.16 × 19,291.76
  4. Step 4: Simplify right side
    42,663.28x = 1,235,235,187.72
  5. Step 5: Solve for x
    x = 1,235,235,187.72/42,663.28
  6. Step 6: Final answer
    x = 28,953.12

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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.