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Finding the Fourth Proportional to 64,968.95, 89,656.47 and 38,106.32

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Solution

The fourth proportional to 64,968.95, 89,656.47 and 38,106.32 is: 52,586.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,968.95 : 89,656.47 = 38,106.32 : x
  2. Step 2: Convert to fraction form
    64,968.95/89,656.47 = 38,106.32/x
  3. Step 3: Cross multiply
    64,968.95x = 89,656.47 × 38,106.32
  4. Step 4: Simplify right side
    64,968.95x = 3,416,477,687.61
  5. Step 5: Solve for x
    x = 3,416,477,687.61/64,968.95
  6. Step 6: Final answer
    x = 52,586.31

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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.