Home / 76,091.13-105,005.10-42,102.12

Finding the Fourth Proportional to 76,091.13, 105,005.10 and 42,102.12

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Solution

The fourth proportional to 76,091.13, 105,005.10 and 42,102.12 is: 58,100.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,091.13 : 105,005.10 = 42,102.12 : x
  2. Step 2: Convert to fraction form
    76,091.13/105,005.10 = 42,102.12/x
  3. Step 3: Cross multiply
    76,091.13x = 105,005.10 × 42,102.12
  4. Step 4: Simplify right side
    76,091.13x = 4,420,937,320.81
  5. Step 5: Solve for x
    x = 4,420,937,320.81/76,091.13
  6. Step 6: Final answer
    x = 58,100.56

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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.