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Finding the Fourth Proportional to 64,187.46, 96,303.99 and 28,645.55

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Solution

The fourth proportional to 64,187.46, 96,303.99 and 28,645.55 is: 42,978.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,187.46 : 96,303.99 = 28,645.55 : x
  2. Step 2: Convert to fraction form
    64,187.46/96,303.99 = 28,645.55/x
  3. Step 3: Cross multiply
    64,187.46x = 96,303.99 × 28,645.55
  4. Step 4: Simplify right side
    64,187.46x = 2,758,680,279.22
  5. Step 5: Solve for x
    x = 2,758,680,279.22/64,187.46
  6. Step 6: Final answer
    x = 42,978.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.