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Finding the Fourth Proportional to 64,212.30, 88,654.56 and 57,486.32

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Solution

The fourth proportional to 64,212.30, 88,654.56 and 57,486.32 is: 79,368.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,212.30 : 88,654.56 = 57,486.32 : x
  2. Step 2: Convert to fraction form
    64,212.30/88,654.56 = 57,486.32/x
  3. Step 3: Cross multiply
    64,212.30x = 88,654.56 × 57,486.32
  4. Step 4: Simplify right side
    64,212.30x = 5,096,424,405.62
  5. Step 5: Solve for x
    x = 5,096,424,405.62/64,212.30
  6. Step 6: Final answer
    x = 79,368.35

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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.