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Finding the Fourth Proportional to 64,883.64, 89,406.52 and 47,860.90

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Solution

The fourth proportional to 64,883.64, 89,406.52 and 47,860.90 is: 65,950.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,883.64 : 89,406.52 = 47,860.90 : x
  2. Step 2: Convert to fraction form
    64,883.64/89,406.52 = 47,860.90/x
  3. Step 3: Cross multiply
    64,883.64x = 89,406.52 × 47,860.90
  4. Step 4: Simplify right side
    64,883.64x = 4,279,076,513.07
  5. Step 5: Solve for x
    x = 4,279,076,513.07/64,883.64
  6. Step 6: Final answer
    x = 65,950.01

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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.