Home / 31,129,394.58-42,970,028.40-18,740,064.20

Finding the Fourth Proportional to 31,129,394.58, 42,970,028.40 and 18,740,064.20

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Solution

The fourth proportional to 31,129,394.58, 42,970,028.40 and 18,740,064.20 is: 25,868,189.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,129,394.58 : 42,970,028.40 = 18,740,064.20 : x
  2. Step 2: Convert to fraction form
    31,129,394.58/42,970,028.40 = 18,740,064.20/x
  3. Step 3: Cross multiply
    31,129,394.58x = 42,970,028.40 × 18,740,064.20
  4. Step 4: Simplify right side
    31,129,394.58x = 805,261,090,891,823.25
  5. Step 5: Solve for x
    x = 805,261,090,891,823.25/31,129,394.58
  6. Step 6: Final answer
    x = 25,868,189.91

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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.