Home / 76,110.81-105,030.32-42,120.73

Finding the Fourth Proportional to 76,110.81, 105,030.32 and 42,120.73

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Solution

The fourth proportional to 76,110.81, 105,030.32 and 42,120.73 is: 58,125.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,110.81 : 105,030.32 = 42,120.73 : x
  2. Step 2: Convert to fraction form
    76,110.81/105,030.32 = 42,120.73/x
  3. Step 3: Cross multiply
    76,110.81x = 105,030.32 × 42,120.73
  4. Step 4: Simplify right side
    76,110.81x = 4,423,953,317.35
  5. Step 5: Solve for x
    x = 4,423,953,317.35/76,110.81
  6. Step 6: Final answer
    x = 58,125.17

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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.