Home / 31,270,618.88-43,135,565.76-18,216,502.40

Finding the Fourth Proportional to 31,270,618.88, 43,135,565.76 and 18,216,502.40

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Solution

The fourth proportional to 31,270,618.88, 43,135,565.76 and 18,216,502.40 is: 25,128,352.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,270,618.88 : 43,135,565.76 = 18,216,502.40 : x
  2. Step 2: Convert to fraction form
    31,270,618.88/43,135,565.76 = 18,216,502.40/x
  3. Step 3: Cross multiply
    31,270,618.88x = 43,135,565.76 × 18,216,502.40
  4. Step 4: Simplify right side
    31,270,618.88x = 785,779,137,192,397.75
  5. Step 5: Solve for x
    x = 785,779,137,192,397.75/31,270,618.88
  6. Step 6: Final answer
    x = 25,128,352.60

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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.