Home / 49,931.04-74,875.77-20,328.78

Finding the Fourth Proportional to 49,931.04, 74,875.77 and 20,328.78

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Solution

The fourth proportional to 49,931.04, 74,875.77 and 20,328.78 is: 30,484.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,931.04 : 74,875.77 = 20,328.78 : x
  2. Step 2: Convert to fraction form
    49,931.04/74,875.77 = 20,328.78/x
  3. Step 3: Cross multiply
    49,931.04x = 74,875.77 × 20,328.78
  4. Step 4: Simplify right side
    49,931.04x = 1,522,133,055.66
  5. Step 5: Solve for x
    x = 1,522,133,055.66/49,931.04
  6. Step 6: Final answer
    x = 30,484.71

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.