Home / 56,438.79-77,885.64-31,288.29

Finding the Fourth Proportional to 56,438.79, 77,885.64 and 31,288.29

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Solution

The fourth proportional to 56,438.79, 77,885.64 and 31,288.29 is: 43,177.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,438.79 : 77,885.64 = 31,288.29 : x
  2. Step 2: Convert to fraction form
    56,438.79/77,885.64 = 31,288.29/x
  3. Step 3: Cross multiply
    56,438.79x = 77,885.64 × 31,288.29
  4. Step 4: Simplify right side
    56,438.79x = 2,436,908,491.16
  5. Step 5: Solve for x
    x = 2,436,908,491.16/56,438.79
  6. Step 6: Final answer
    x = 43,177.90

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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.