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Finding the Fourth Proportional to 65,730.80, 98,596.20 and 18,345.80

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Solution

The fourth proportional to 65,730.80, 98,596.20 and 18,345.80 is: 27,518.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,730.80 : 98,596.20 = 18,345.80 : x
  2. Step 2: Convert to fraction form
    65,730.80/98,596.20 = 18,345.80/x
  3. Step 3: Cross multiply
    65,730.80x = 98,596.20 × 18,345.80
  4. Step 4: Simplify right side
    65,730.80x = 1,808,826,165.96
  5. Step 5: Solve for x
    x = 1,808,826,165.96/65,730.80
  6. Step 6: Final answer
    x = 27,518.70

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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.