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Finding the Fourth Proportional to 104,735.79, 144,534.72 and 56,989.32

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Solution

The fourth proportional to 104,735.79, 144,534.72 and 56,989.32 is: 78,644.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,735.79 : 144,534.72 = 56,989.32 : x
  2. Step 2: Convert to fraction form
    104,735.79/144,534.72 = 56,989.32/x
  3. Step 3: Cross multiply
    104,735.79x = 144,534.72 × 56,989.32
  4. Step 4: Simplify right side
    104,735.79x = 8,236,935,409.19
  5. Step 5: Solve for x
    x = 8,236,935,409.19/104,735.79
  6. Step 6: Final answer
    x = 78,644.90

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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.