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Finding the Fourth Proportional to 92,547.20, 138,966.60 and 53,181.20

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Solution

The fourth proportional to 92,547.20, 138,966.60 and 53,181.20 is: 79,855.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,547.20 : 138,966.60 = 53,181.20 : x
  2. Step 2: Convert to fraction form
    92,547.20/138,966.60 = 53,181.20/x
  3. Step 3: Cross multiply
    92,547.20x = 138,966.60 × 53,181.20
  4. Step 4: Simplify right side
    92,547.20x = 7,390,410,547.92
  5. Step 5: Solve for x
    x = 7,390,410,547.92/92,547.20
  6. Step 6: Final answer
    x = 79,855.58

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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.