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Finding the Fourth Proportional to 64,322.79, 88,764.12 and 35,642.20

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Solution

The fourth proportional to 64,322.79, 88,764.12 and 35,642.20 is: 49,185.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,322.79 : 88,764.12 = 35,642.20 : x
  2. Step 2: Convert to fraction form
    64,322.79/88,764.12 = 35,642.20/x
  3. Step 3: Cross multiply
    64,322.79x = 88,764.12 × 35,642.20
  4. Step 4: Simplify right side
    64,322.79x = 3,163,748,712.04
  5. Step 5: Solve for x
    x = 3,163,748,712.04/64,322.79
  6. Step 6: Final answer
    x = 49,185.50

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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.