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Finding the Fourth Proportional to 64,458.48, 88,880.76 and 40,555.92

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Solution

The fourth proportional to 64,458.48, 88,880.76 and 40,555.92 is: 55,921.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,458.48 : 88,880.76 = 40,555.92 : x
  2. Step 2: Convert to fraction form
    64,458.48/88,880.76 = 40,555.92/x
  3. Step 3: Cross multiply
    64,458.48x = 88,880.76 × 40,555.92
  4. Step 4: Simplify right side
    64,458.48x = 3,604,640,992.10
  5. Step 5: Solve for x
    x = 3,604,640,992.10/64,458.48
  6. Step 6: Final answer
    x = 55,921.90

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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.