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Finding the Fourth Proportional to 78,446.16, 108,254.88 and 58,392.72

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Solution

The fourth proportional to 78,446.16, 108,254.88 and 58,392.72 is: 80,581.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,446.16 : 108,254.88 = 58,392.72 : x
  2. Step 2: Convert to fraction form
    78,446.16/108,254.88 = 58,392.72/x
  3. Step 3: Cross multiply
    78,446.16x = 108,254.88 × 58,392.72
  4. Step 4: Simplify right side
    78,446.16x = 6,321,296,896.47
  5. Step 5: Solve for x
    x = 6,321,296,896.47/78,446.16
  6. Step 6: Final answer
    x = 80,581.34

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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.