Home / 76,110.60-105,032.83-42,121.43

Finding the Fourth Proportional to 76,110.60, 105,032.83 and 42,121.43

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Solution

The fourth proportional to 76,110.60, 105,032.83 and 42,121.43 is: 58,127.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,110.60 : 105,032.83 = 42,121.43 : x
  2. Step 2: Convert to fraction form
    76,110.60/105,032.83 = 42,121.43/x
  3. Step 3: Cross multiply
    76,110.60x = 105,032.83 × 42,121.43
  4. Step 4: Simplify right side
    76,110.60x = 4,424,132,802.00
  5. Step 5: Solve for x
    x = 4,424,132,802.00/76,110.60
  6. Step 6: Final answer
    x = 58,127.68

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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.