Home / 71,854.26-99,159.09-39,587.79

Finding the Fourth Proportional to 71,854.26, 99,159.09 and 39,587.79

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Solution

The fourth proportional to 71,854.26, 99,159.09 and 39,587.79 is: 54,631.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,854.26 : 99,159.09 = 39,587.79 : x
  2. Step 2: Convert to fraction form
    71,854.26/99,159.09 = 39,587.79/x
  3. Step 3: Cross multiply
    71,854.26x = 99,159.09 × 39,587.79
  4. Step 4: Simplify right side
    71,854.26x = 3,925,489,231.51
  5. Step 5: Solve for x
    x = 3,925,489,231.51/71,854.26
  6. Step 6: Final answer
    x = 54,631.27

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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.