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Finding the Fourth Proportional to 72,543.95, 100,152.32 and 48,338.53

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Solution

The fourth proportional to 72,543.95, 100,152.32 and 48,338.53 is: 66,734.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,543.95 : 100,152.32 = 48,338.53 : x
  2. Step 2: Convert to fraction form
    72,543.95/100,152.32 = 48,338.53/x
  3. Step 3: Cross multiply
    72,543.95x = 100,152.32 × 48,338.53
  4. Step 4: Simplify right side
    72,543.95x = 4,841,215,924.89
  5. Step 5: Solve for x
    x = 4,841,215,924.89/72,543.95
  6. Step 6: Final answer
    x = 66,734.94

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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.