Home / 66,061,739-91,172,347.26-39,970,641.08

Finding the Fourth Proportional to 66,061,739, 91,172,347.26 and 39,970,641.08

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Solution

The fourth proportional to 66,061,739, 91,172,347.26 and 39,970,641.08 is: 55,163,809.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,061,739 : 91,172,347.26 = 39,970,641.08 : x
  2. Step 2: Convert to fraction form
    66,061,739/91,172,347.26 = 39,970,641.08/x
  3. Step 3: Cross multiply
    66,061,739x = 91,172,347.26 × 39,970,641.08
  4. Step 4: Simplify right side
    66,061,739x = 3,644,217,168,750,581.50
  5. Step 5: Solve for x
    x = 3,644,217,168,750,581.50/66,061,739
  6. Step 6: Final answer
    x = 55,163,809.25

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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.