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Finding the Fourth Proportional to 55,077.71, 76,007.03 and 31,208.93

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Solution

The fourth proportional to 55,077.71, 76,007.03 and 31,208.93 is: 43,068.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,077.71 : 76,007.03 = 31,208.93 : x
  2. Step 2: Convert to fraction form
    55,077.71/76,007.03 = 31,208.93/x
  3. Step 3: Cross multiply
    55,077.71x = 76,007.03 × 31,208.93
  4. Step 4: Simplify right side
    55,077.71x = 2,372,097,542.70
  5. Step 5: Solve for x
    x = 2,372,097,542.70/55,077.71
  6. Step 6: Final answer
    x = 43,068.20

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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.