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Finding the Fourth Proportional to 64,868.64, 89,511.12 and 36,572.64

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Solution

The fourth proportional to 64,868.64, 89,511.12 and 36,572.64 is: 50,465.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,868.64 : 89,511.12 = 36,572.64 : x
  2. Step 2: Convert to fraction form
    64,868.64/89,511.12 = 36,572.64/x
  3. Step 3: Cross multiply
    64,868.64x = 89,511.12 × 36,572.64
  4. Step 4: Simplify right side
    64,868.64x = 3,273,657,967.76
  5. Step 5: Solve for x
    x = 3,273,657,967.76/64,868.64
  6. Step 6: Final answer
    x = 50,465.96

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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.