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Finding the Fourth Proportional to 72,885.15, 100,547.14 and 42,651.94

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Solution

The fourth proportional to 72,885.15, 100,547.14 and 42,651.94 is: 58,839.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,885.15 : 100,547.14 = 42,651.94 : x
  2. Step 2: Convert to fraction form
    72,885.15/100,547.14 = 42,651.94/x
  3. Step 3: Cross multiply
    72,885.15x = 100,547.14 × 42,651.94
  4. Step 4: Simplify right side
    72,885.15x = 4,288,529,866.46
  5. Step 5: Solve for x
    x = 4,288,529,866.46/72,885.15
  6. Step 6: Final answer
    x = 58,839.56

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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.