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Finding the Fourth Proportional to 72,590.72, 100,101.52 and 68,357.60

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Solution

The fourth proportional to 72,590.72, 100,101.52 and 68,357.60 is: 94,264.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,590.72 : 100,101.52 = 68,357.60 : x
  2. Step 2: Convert to fraction form
    72,590.72/100,101.52 = 68,357.60/x
  3. Step 3: Cross multiply
    72,590.72x = 100,101.52 × 68,357.60
  4. Step 4: Simplify right side
    72,590.72x = 6,842,699,663.55
  5. Step 5: Solve for x
    x = 6,842,699,663.55/72,590.72
  6. Step 6: Final answer
    x = 94,264.11

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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.