Home / 71,142.91-98,176.25-39,312.34

Finding the Fourth Proportional to 71,142.91, 98,176.25 and 39,312.34

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Solution

The fourth proportional to 71,142.91, 98,176.25 and 39,312.34 is: 54,250.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,142.91 : 98,176.25 = 39,312.34 : x
  2. Step 2: Convert to fraction form
    71,142.91/98,176.25 = 39,312.34/x
  3. Step 3: Cross multiply
    71,142.91x = 98,176.25 × 39,312.34
  4. Step 4: Simplify right side
    71,142.91x = 3,859,537,972.77
  5. Step 5: Solve for x
    x = 3,859,537,972.77/71,142.91
  6. Step 6: Final answer
    x = 54,250.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.