Home / 87,051.60-120,128.92-49,325.84

Finding the Fourth Proportional to 87,051.60, 120,128.92 and 49,325.84

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Solution

The fourth proportional to 87,051.60, 120,128.92 and 49,325.84 is: 68,068.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,051.60 : 120,128.92 = 49,325.84 : x
  2. Step 2: Convert to fraction form
    87,051.60/120,128.92 = 49,325.84/x
  3. Step 3: Cross multiply
    87,051.60x = 120,128.92 × 49,325.84
  4. Step 4: Simplify right side
    87,051.60x = 5,925,459,887.29
  5. Step 5: Solve for x
    x = 5,925,459,887.29/87,051.60
  6. Step 6: Final answer
    x = 68,068.36

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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.