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Finding the Fourth Proportional to 64,870.64, 89,513.88 and 36,574.64

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Solution

The fourth proportional to 64,870.64, 89,513.88 and 36,574.64 is: 50,468.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,870.64 : 89,513.88 = 36,574.64 : x
  2. Step 2: Convert to fraction form
    64,870.64/89,513.88 = 36,574.64/x
  3. Step 3: Cross multiply
    64,870.64x = 89,513.88 × 36,574.64
  4. Step 4: Simplify right side
    64,870.64x = 3,273,937,936.00
  5. Step 5: Solve for x
    x = 3,273,937,936.00/64,870.64
  6. Step 6: Final answer
    x = 50,468.72

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1.5x scale

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.