Home / 76,324.68-105,328.65-42,331.28

Finding the Fourth Proportional to 76,324.68, 105,328.65 and 42,331.28

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Solution

The fourth proportional to 76,324.68, 105,328.65 and 42,331.28 is: 58,417.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,324.68 : 105,328.65 = 42,331.28 : x
  2. Step 2: Convert to fraction form
    76,324.68/105,328.65 = 42,331.28/x
  3. Step 3: Cross multiply
    76,324.68x = 105,328.65 × 42,331.28
  4. Step 4: Simplify right side
    76,324.68x = 4,458,696,048.53
  5. Step 5: Solve for x
    x = 4,458,696,048.53/76,324.68
  6. Step 6: Final answer
    x = 58,417.49

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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.