Home / 38,639,322.12-53,323,543.31-21,236,284.20

Finding the Fourth Proportional to 38,639,322.12, 53,323,543.31 and 21,236,284.20

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Solution

The fourth proportional to 38,639,322.12, 53,323,543.31 and 21,236,284.20 is: 29,306,775.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,639,322.12 : 53,323,543.31 = 21,236,284.20 : x
  2. Step 2: Convert to fraction form
    38,639,322.12/53,323,543.31 = 21,236,284.20/x
  3. Step 3: Cross multiply
    38,639,322.12x = 53,323,543.31 × 21,236,284.20
  4. Step 4: Simplify right side
    38,639,322.12x = 1,132,393,920,175,987.25
  5. Step 5: Solve for x
    x = 1,132,393,920,175,987.25/38,639,322.12
  6. Step 6: Final answer
    x = 29,306,775.02

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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.