Home / 39,078,005.55-53,934,103.02-21,679,955.83

Finding the Fourth Proportional to 39,078,005.55, 53,934,103.02 and 21,679,955.83

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Solution

The fourth proportional to 39,078,005.55, 53,934,103.02 and 21,679,955.83 is: 29,921,920.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,078,005.55 : 53,934,103.02 = 21,679,955.83 : x
  2. Step 2: Convert to fraction form
    39,078,005.55/53,934,103.02 = 21,679,955.83/x
  3. Step 3: Cross multiply
    39,078,005.55x = 53,934,103.02 × 21,679,955.83
  4. Step 4: Simplify right side
    39,078,005.55x = 1,169,288,971,204,269.50
  5. Step 5: Solve for x
    x = 1,169,288,971,204,269.50/39,078,005.55
  6. Step 6: Final answer
    x = 29,921,920.39

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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.