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Finding the Fourth Proportional to 72,647.60, 108,679.80 and 62,895.20

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Solution

The fourth proportional to 72,647.60, 108,679.80 and 62,895.20 is: 94,090.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,647.60 : 108,679.80 = 62,895.20 : x
  2. Step 2: Convert to fraction form
    72,647.60/108,679.80 = 62,895.20/x
  3. Step 3: Cross multiply
    72,647.60x = 108,679.80 × 62,895.20
  4. Step 4: Simplify right side
    72,647.60x = 6,835,437,756.96
  5. Step 5: Solve for x
    x = 6,835,437,756.96/72,647.60
  6. Step 6: Final answer
    x = 94,090.35

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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.