Home / 76,742.90-105,903.75-42,754.19

Finding the Fourth Proportional to 76,742.90, 105,903.75 and 42,754.19

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Solution

The fourth proportional to 76,742.90, 105,903.75 and 42,754.19 is: 58,999.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,742.90 : 105,903.75 = 42,754.19 : x
  2. Step 2: Convert to fraction form
    76,742.90/105,903.75 = 42,754.19/x
  3. Step 3: Cross multiply
    76,742.90x = 105,903.75 × 42,754.19
  4. Step 4: Simplify right side
    76,742.90x = 4,527,828,519.69
  5. Step 5: Solve for x
    x = 4,527,828,519.69/76,742.90
  6. Step 6: Final answer
    x = 58,999.97

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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.