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Finding the Fourth Proportional to 64,465.92, 88,940.16 and 42,122.88

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Solution

The fourth proportional to 64,465.92, 88,940.16 and 42,122.88 is: 58,114.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,465.92 : 88,940.16 = 42,122.88 : x
  2. Step 2: Convert to fraction form
    64,465.92/88,940.16 = 42,122.88/x
  3. Step 3: Cross multiply
    64,465.92x = 88,940.16 × 42,122.88
  4. Step 4: Simplify right side
    64,465.92x = 3,746,415,686.86
  5. Step 5: Solve for x
    x = 3,746,415,686.86/64,465.92
  6. Step 6: Final answer
    x = 58,114.67

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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.