Home / 80,842,046.40-121,280,784.30-39,921,089.40

Finding the Fourth Proportional to 80,842,046.40, 121,280,784.30 and 39,921,089.40

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Solution

The fourth proportional to 80,842,046.40, 121,280,784.30 and 39,921,089.40 is: 59,890,381.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,842,046.40 : 121,280,784.30 = 39,921,089.40 : x
  2. Step 2: Convert to fraction form
    80,842,046.40/121,280,784.30 = 39,921,089.40/x
  3. Step 3: Cross multiply
    80,842,046.40x = 121,280,784.30 × 39,921,089.40
  4. Step 4: Simplify right side
    80,842,046.40x = 4,841,661,032,542,416
  5. Step 5: Solve for x
    x = 4,841,661,032,542,416/80,842,046.40
  6. Step 6: Final answer
    x = 59,890,381.90

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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.