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Finding the Fourth Proportional to 78,506.40, 108,300.78 and 46,652.76

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Solution

The fourth proportional to 78,506.40, 108,300.78 and 46,652.76 is: 64,358.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,506.40 : 108,300.78 = 46,652.76 : x
  2. Step 2: Convert to fraction form
    78,506.40/108,300.78 = 46,652.76/x
  3. Step 3: Cross multiply
    78,506.40x = 108,300.78 × 46,652.76
  4. Step 4: Simplify right side
    78,506.40x = 5,052,530,297.15
  5. Step 5: Solve for x
    x = 5,052,530,297.15/78,506.40
  6. Step 6: Final answer
    x = 64,358.20

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1.5x scale

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.