Home / 61,921.80-92,828.70-42,136.20

Finding the Fourth Proportional to 61,921.80, 92,828.70 and 42,136.20

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Solution

The fourth proportional to 61,921.80, 92,828.70 and 42,136.20 is: 63,167.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,921.80 : 92,828.70 = 42,136.20 : x
  2. Step 2: Convert to fraction form
    61,921.80/92,828.70 = 42,136.20/x
  3. Step 3: Cross multiply
    61,921.80x = 92,828.70 × 42,136.20
  4. Step 4: Simplify right side
    61,921.80x = 3,911,448,668.94
  5. Step 5: Solve for x
    x = 3,911,448,668.94/61,921.80
  6. Step 6: Final answer
    x = 63,167.55

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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.