Home / 31,956,005.20-47,934,007.80-12,789,720.40

Finding the Fourth Proportional to 31,956,005.20, 47,934,007.80 and 12,789,720.40

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Solution

The fourth proportional to 31,956,005.20, 47,934,007.80 and 12,789,720.40 is: 19,184,580.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,956,005.20 : 47,934,007.80 = 12,789,720.40 : x
  2. Step 2: Convert to fraction form
    31,956,005.20/47,934,007.80 = 12,789,720.40/x
  3. Step 3: Cross multiply
    31,956,005.20x = 47,934,007.80 × 12,789,720.40
  4. Step 4: Simplify right side
    31,956,005.20x = 613,062,557,413,419.12
  5. Step 5: Solve for x
    x = 613,062,557,413,419.12/31,956,005.20
  6. Step 6: Final answer
    x = 19,184,580.60

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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.