Home / 71,445.06-98,590.77-39,178.98

Finding the Fourth Proportional to 71,445.06, 98,590.77 and 39,178.98

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Solution

The fourth proportional to 71,445.06, 98,590.77 and 39,178.98 is: 54,065.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,445.06 : 98,590.77 = 39,178.98 : x
  2. Step 2: Convert to fraction form
    71,445.06/98,590.77 = 39,178.98/x
  3. Step 3: Cross multiply
    71,445.06x = 98,590.77 × 39,178.98
  4. Step 4: Simplify right side
    71,445.06x = 3,862,685,806.01
  5. Step 5: Solve for x
    x = 3,862,685,806.01/71,445.06
  6. Step 6: Final answer
    x = 54,065.12

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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.