Home / 61,302.14-91,968.02-21,315.35

Finding the Fourth Proportional to 61,302.14, 91,968.02 and 21,315.35

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Solution

The fourth proportional to 61,302.14, 91,968.02 and 21,315.35 is: 31,978.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,302.14 : 91,968.02 = 21,315.35 : x
  2. Step 2: Convert to fraction form
    61,302.14/91,968.02 = 21,315.35/x
  3. Step 3: Cross multiply
    61,302.14x = 91,968.02 × 21,315.35
  4. Step 4: Simplify right side
    61,302.14x = 1,960,330,128.56
  5. Step 5: Solve for x
    x = 1,960,330,128.56/61,302.14
  6. Step 6: Final answer
    x = 31,978.17

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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.