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Finding the Fourth Proportional to 58,787.80, 81,127.34 and 31,930.76

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Solution

The fourth proportional to 58,787.80, 81,127.34 and 31,930.76 is: 44,064.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,787.80 : 81,127.34 = 31,930.76 : x
  2. Step 2: Convert to fraction form
    58,787.80/81,127.34 = 31,930.76/x
  3. Step 3: Cross multiply
    58,787.80x = 81,127.34 × 31,930.76
  4. Step 4: Simplify right side
    58,787.80x = 2,590,457,622.98
  5. Step 5: Solve for x
    x = 2,590,457,622.98/58,787.80
  6. Step 6: Final answer
    x = 44,064.54

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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.