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Finding the Fourth Proportional to 98,561.80, 147,842.70 and 56,960.20

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Solution

The fourth proportional to 98,561.80, 147,842.70 and 56,960.20 is: 85,440.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,561.80 : 147,842.70 = 56,960.20 : x
  2. Step 2: Convert to fraction form
    98,561.80/147,842.70 = 56,960.20/x
  3. Step 3: Cross multiply
    98,561.80x = 147,842.70 × 56,960.20
  4. Step 4: Simplify right side
    98,561.80x = 8,421,149,760.54
  5. Step 5: Solve for x
    x = 8,421,149,760.54/98,561.80
  6. Step 6: Final answer
    x = 85,440.30

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1.5x scale

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.