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Finding the Fourth Proportional to 72,623.60, 108,643.80 and 62,871.20

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Solution

The fourth proportional to 72,623.60, 108,643.80 and 62,871.20 is: 94,054.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,623.60 : 108,643.80 = 62,871.20 : x
  2. Step 2: Convert to fraction form
    72,623.60/108,643.80 = 62,871.20/x
  3. Step 3: Cross multiply
    72,623.60x = 108,643.80 × 62,871.20
  4. Step 4: Simplify right side
    72,623.60x = 6,830,566,078.56
  5. Step 5: Solve for x
    x = 6,830,566,078.56/72,623.60
  6. Step 6: Final answer
    x = 94,054.36

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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.