Home / 28,079,781.30-42,088,758.30-18,360,386.10

Finding the Fourth Proportional to 28,079,781.30, 42,088,758.30 and 18,360,386.10

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Solution

The fourth proportional to 28,079,781.30, 42,088,758.30 and 18,360,386.10 is: 27,520,365.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,079,781.30 : 42,088,758.30 = 18,360,386.10 : x
  2. Step 2: Convert to fraction form
    28,079,781.30/42,088,758.30 = 18,360,386.10/x
  3. Step 3: Cross multiply
    28,079,781.30x = 42,088,758.30 × 18,360,386.10
  4. Step 4: Simplify right side
    28,079,781.30x = 772,765,852,857,579.62
  5. Step 5: Solve for x
    x = 772,765,852,857,579.62/28,079,781.30
  6. Step 6: Final answer
    x = 27,520,365.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.