Home / 55,138.61-82,574.69-31,374.16

Finding the Fourth Proportional to 55,138.61, 82,574.69 and 31,374.16

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Solution

The fourth proportional to 55,138.61, 82,574.69 and 31,374.16 is: 46,985.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,138.61 : 82,574.69 = 31,374.16 : x
  2. Step 2: Convert to fraction form
    55,138.61/82,574.69 = 31,374.16/x
  3. Step 3: Cross multiply
    55,138.61x = 82,574.69 × 31,374.16
  4. Step 4: Simplify right side
    55,138.61x = 2,590,711,123.14
  5. Step 5: Solve for x
    x = 2,590,711,123.14/55,138.61
  6. Step 6: Final answer
    x = 46,985.43

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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.