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Finding the Fourth Proportional to 64,664.38, 89,211.52 and 47,709.32

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Solution

The fourth proportional to 64,664.38, 89,211.52 and 47,709.32 is: 65,820.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,664.38 : 89,211.52 = 47,709.32 : x
  2. Step 2: Convert to fraction form
    64,664.38/89,211.52 = 47,709.32/x
  3. Step 3: Cross multiply
    64,664.38x = 89,211.52 × 47,709.32
  4. Step 4: Simplify right side
    64,664.38x = 4,256,220,955.37
  5. Step 5: Solve for x
    x = 4,256,220,955.37/64,664.38
  6. Step 6: Final answer
    x = 65,820.18

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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.