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Finding the Fourth Proportional to 60,643.59, 90,927.21 and 18,509.66

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Solution

The fourth proportional to 60,643.59, 90,927.21 and 18,509.66 is: 27,752.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,643.59 : 90,927.21 = 18,509.66 : x
  2. Step 2: Convert to fraction form
    60,643.59/90,927.21 = 18,509.66/x
  3. Step 3: Cross multiply
    60,643.59x = 90,927.21 × 18,509.66
  4. Step 4: Simplify right side
    60,643.59x = 1,683,031,741.85
  5. Step 5: Solve for x
    x = 1,683,031,741.85/60,643.59
  6. Step 6: Final answer
    x = 27,752.84

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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.