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Finding the Fourth Proportional to 64,618.32, 96,902.88 and 42,425.76

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Solution

The fourth proportional to 64,618.32, 96,902.88 and 42,425.76 is: 63,622.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,618.32 : 96,902.88 = 42,425.76 : x
  2. Step 2: Convert to fraction form
    64,618.32/96,902.88 = 42,425.76/x
  3. Step 3: Cross multiply
    64,618.32x = 96,902.88 × 42,425.76
  4. Step 4: Simplify right side
    64,618.32x = 4,111,178,330.19
  5. Step 5: Solve for x
    x = 4,111,178,330.19/64,618.32
  6. Step 6: Final answer
    x = 63,622.49

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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.