Home / 76,116.80-105,039.05-42,126.71

Finding the Fourth Proportional to 76,116.80, 105,039.05 and 42,126.71

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Solution

The fourth proportional to 76,116.80, 105,039.05 and 42,126.71 is: 58,133.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,116.80 : 105,039.05 = 42,126.71 : x
  2. Step 2: Convert to fraction form
    76,116.80/105,039.05 = 42,126.71/x
  3. Step 3: Cross multiply
    76,116.80x = 105,039.05 × 42,126.71
  4. Step 4: Simplify right side
    76,116.80x = 4,424,948,862.20
  5. Step 5: Solve for x
    x = 4,424,948,862.20/76,116.80
  6. Step 6: Final answer
    x = 58,133.67

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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.