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Finding the Fourth Proportional to 64,415.64, 89,015.58 and 48,472.32

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Solution

The fourth proportional to 64,415.64, 89,015.58 and 48,472.32 is: 66,983.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,415.64 : 89,015.58 = 48,472.32 : x
  2. Step 2: Convert to fraction form
    64,415.64/89,015.58 = 48,472.32/x
  3. Step 3: Cross multiply
    64,415.64x = 89,015.58 × 48,472.32
  4. Step 4: Simplify right side
    64,415.64x = 4,314,791,678.75
  5. Step 5: Solve for x
    x = 4,314,791,678.75/64,415.64
  6. Step 6: Final answer
    x = 66,983.60

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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.