Home / 79,238,078.20-118,857,117.30-54,579,215.80

Finding the Fourth Proportional to 79,238,078.20, 118,857,117.30 and 54,579,215.80

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Solution

The fourth proportional to 79,238,078.20, 118,857,117.30 and 54,579,215.80 is: 81,868,823.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,238,078.20 : 118,857,117.30 = 54,579,215.80 : x
  2. Step 2: Convert to fraction form
    79,238,078.20/118,857,117.30 = 54,579,215.80/x
  3. Step 3: Cross multiply
    79,238,078.20x = 118,857,117.30 × 54,579,215.80
  4. Step 4: Simplify right side
    79,238,078.20x = 6,487,128,254,482,613
  5. Step 5: Solve for x
    x = 6,487,128,254,482,613/79,238,078.20
  6. Step 6: Final answer
    x = 81,868,823.70

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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.