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Finding the Fourth Proportional to 58,364.88, 87,555.96 and 21,426

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Solution

The fourth proportional to 58,364.88, 87,555.96 and 21,426 is: 32,142.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,364.88 : 87,555.96 = 21,426 : x
  2. Step 2: Convert to fraction form
    58,364.88/87,555.96 = 21,426/x
  3. Step 3: Cross multiply
    58,364.88x = 87,555.96 × 21,426
  4. Step 4: Simplify right side
    58,364.88x = 1,875,973,998.96
  5. Step 5: Solve for x
    x = 1,875,973,998.96/58,364.88
  6. Step 6: Final answer
    x = 32,142.17

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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.