Home / 71,389.50-98,519.67-39,555.42

Finding the Fourth Proportional to 71,389.50, 98,519.67 and 39,555.42

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Solution

The fourth proportional to 71,389.50, 98,519.67 and 39,555.42 is: 54,587.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,389.50 : 98,519.67 = 39,555.42 : x
  2. Step 2: Convert to fraction form
    71,389.50/98,519.67 = 39,555.42/x
  3. Step 3: Cross multiply
    71,389.50x = 98,519.67 × 39,555.42
  4. Step 4: Simplify right side
    71,389.50x = 3,896,986,925.11
  5. Step 5: Solve for x
    x = 3,896,986,925.11/71,389.50
  6. Step 6: Final answer
    x = 54,587.68

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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.