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Finding the Fourth Proportional to 88,369.63, 121,909.80 and 52,539.28

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Solution

The fourth proportional to 88,369.63, 121,909.80 and 52,539.28 is: 72,480.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,369.63 : 121,909.80 = 52,539.28 : x
  2. Step 2: Convert to fraction form
    88,369.63/121,909.80 = 52,539.28/x
  3. Step 3: Cross multiply
    88,369.63x = 121,909.80 × 52,539.28
  4. Step 4: Simplify right side
    88,369.63x = 6,405,053,116.94
  5. Step 5: Solve for x
    x = 6,405,053,116.94/88,369.63
  6. Step 6: Final answer
    x = 72,480.25

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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.