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Finding the Fourth Proportional to 98,407.20, 147,632.40 and 48,511.20

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Solution

The fourth proportional to 98,407.20, 147,632.40 and 48,511.20 is: 72,777.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,407.20 : 147,632.40 = 48,511.20 : x
  2. Step 2: Convert to fraction form
    98,407.20/147,632.40 = 48,511.20/x
  3. Step 3: Cross multiply
    98,407.20x = 147,632.40 × 48,511.20
  4. Step 4: Simplify right side
    98,407.20x = 7,161,824,882.88
  5. Step 5: Solve for x
    x = 7,161,824,882.88/98,407.20
  6. Step 6: Final answer
    x = 72,777.45

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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.