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Finding the Fourth Proportional to 72,368.60, 108,536.70 and 47,582.60

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Solution

The fourth proportional to 72,368.60, 108,536.70 and 47,582.60 is: 71,363.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,368.60 : 108,536.70 = 47,582.60 : x
  2. Step 2: Convert to fraction form
    72,368.60/108,536.70 = 47,582.60/x
  3. Step 3: Cross multiply
    72,368.60x = 108,536.70 × 47,582.60
  4. Step 4: Simplify right side
    72,368.60x = 5,164,458,381.42
  5. Step 5: Solve for x
    x = 5,164,458,381.42/72,368.60
  6. Step 6: Final answer
    x = 71,363.25

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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.