Home / 51,381.21-76,878.02-30,332.71

Finding the Fourth Proportional to 51,381.21, 76,878.02 and 30,332.71

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Solution

The fourth proportional to 51,381.21, 76,878.02 and 30,332.71 is: 45,384.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,381.21 : 76,878.02 = 30,332.71 : x
  2. Step 2: Convert to fraction form
    51,381.21/76,878.02 = 30,332.71/x
  3. Step 3: Cross multiply
    51,381.21x = 76,878.02 × 30,332.71
  4. Step 4: Simplify right side
    51,381.21x = 2,331,918,686.03
  5. Step 5: Solve for x
    x = 2,331,918,686.03/51,381.21
  6. Step 6: Final answer
    x = 45,384.66

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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.