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Finding the Fourth Proportional to 61,215.51, 91,812.88 and 27,927.75

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Solution

The fourth proportional to 61,215.51, 91,812.88 and 27,927.75 is: 41,886.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,215.51 : 91,812.88 = 27,927.75 : x
  2. Step 2: Convert to fraction form
    61,215.51/91,812.88 = 27,927.75/x
  3. Step 3: Cross multiply
    61,215.51x = 91,812.88 × 27,927.75
  4. Step 4: Simplify right side
    61,215.51x = 2,564,127,381.53
  5. Step 5: Solve for x
    x = 2,564,127,381.53/61,215.51
  6. Step 6: Final answer
    x = 41,886.89

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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.