Home / 66,417.03-91,648.13-39,555.81

Finding the Fourth Proportional to 66,417.03, 91,648.13 and 39,555.81

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Solution

The fourth proportional to 66,417.03, 91,648.13 and 39,555.81 is: 54,582.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,417.03 : 91,648.13 = 39,555.81 : x
  2. Step 2: Convert to fraction form
    66,417.03/91,648.13 = 39,555.81/x
  3. Step 3: Cross multiply
    66,417.03x = 91,648.13 × 39,555.81
  4. Step 4: Simplify right side
    66,417.03x = 3,625,215,819.36
  5. Step 5: Solve for x
    x = 3,625,215,819.36/66,417.03
  6. Step 6: Final answer
    x = 54,582.62

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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.