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Finding the Fourth Proportional to 64,653.53, 89,277.93 and 47,687.18

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Solution

The fourth proportional to 64,653.53, 89,277.93 and 47,687.18 is: 65,849.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,653.53 : 89,277.93 = 47,687.18 : x
  2. Step 2: Convert to fraction form
    64,653.53/89,277.93 = 47,687.18/x
  3. Step 3: Cross multiply
    64,653.53x = 89,277.93 × 47,687.18
  4. Step 4: Simplify right side
    64,653.53x = 4,257,412,271.55
  5. Step 5: Solve for x
    x = 4,257,412,271.55/64,653.53
  6. Step 6: Final answer
    x = 65,849.65

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.