Home / 80,913,785.40-121,370,678.10-53,704,006.20

Finding the Fourth Proportional to 80,913,785.40, 121,370,678.10 and 53,704,006.20

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Solution

The fourth proportional to 80,913,785.40, 121,370,678.10 and 53,704,006.20 is: 80,556,009.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,913,785.40 : 121,370,678.10 = 53,704,006.20 : x
  2. Step 2: Convert to fraction form
    80,913,785.40/121,370,678.10 = 53,704,006.20/x
  3. Step 3: Cross multiply
    80,913,785.40x = 121,370,678.10 × 53,704,006.20
  4. Step 4: Simplify right side
    80,913,785.40x = 6,518,091,649,180,604
  5. Step 5: Solve for x
    x = 6,518,091,649,180,604/80,913,785.40
  6. Step 6: Final answer
    x = 80,556,009.30

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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.