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Finding the Fourth Proportional to 86,507.54, 119,305.86 and 56,281.84

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Solution

The fourth proportional to 86,507.54, 119,305.86 and 56,281.84 is: 77,620.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,507.54 : 119,305.86 = 56,281.84 : x
  2. Step 2: Convert to fraction form
    86,507.54/119,305.86 = 56,281.84/x
  3. Step 3: Cross multiply
    86,507.54x = 119,305.86 × 56,281.84
  4. Step 4: Simplify right side
    86,507.54x = 6,714,753,130.85
  5. Step 5: Solve for x
    x = 6,714,753,130.85/86,507.54
  6. Step 6: Final answer
    x = 77,620.43

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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.