Home / 31,380,128.40-47,070,192.60-11,178,080.40

Finding the Fourth Proportional to 31,380,128.40, 47,070,192.60 and 11,178,080.40

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Solution

The fourth proportional to 31,380,128.40, 47,070,192.60 and 11,178,080.40 is: 16,767,120.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,380,128.40 : 47,070,192.60 = 11,178,080.40 : x
  2. Step 2: Convert to fraction form
    31,380,128.40/47,070,192.60 = 11,178,080.40/x
  3. Step 3: Cross multiply
    31,380,128.40x = 47,070,192.60 × 11,178,080.40
  4. Step 4: Simplify right side
    31,380,128.40x = 526,154,397,326,285.06
  5. Step 5: Solve for x
    x = 526,154,397,326,285.06/31,380,128.40
  6. Step 6: Final answer
    x = 16,767,120.60

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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.