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Finding the Fourth Proportional to 58,051.17, 87,115.59 and 21,115.17

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Solution

The fourth proportional to 58,051.17, 87,115.59 and 21,115.17 is: 31,686.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,051.17 : 87,115.59 = 21,115.17 : x
  2. Step 2: Convert to fraction form
    58,051.17/87,115.59 = 21,115.17/x
  3. Step 3: Cross multiply
    58,051.17x = 87,115.59 × 21,115.17
  4. Step 4: Simplify right side
    58,051.17x = 1,839,460,492.50
  5. Step 5: Solve for x
    x = 1,839,460,492.50/58,051.17
  6. Step 6: Final answer
    x = 31,686.88

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1.5x scale

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.