Home / 42,909.99-64,382.61-18,881.91

Finding the Fourth Proportional to 42,909.99, 64,382.61 and 18,881.91

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Solution

The fourth proportional to 42,909.99, 64,382.61 and 18,881.91 is: 28,330.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,909.99 : 64,382.61 = 18,881.91 : x
  2. Step 2: Convert to fraction form
    42,909.99/64,382.61 = 18,881.91/x
  3. Step 3: Cross multiply
    42,909.99x = 64,382.61 × 18,881.91
  4. Step 4: Simplify right side
    42,909.99x = 1,215,666,647.59
  5. Step 5: Solve for x
    x = 1,215,666,647.59/42,909.99
  6. Step 6: Final answer
    x = 28,330.62

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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.