Home / 71,856,345.40-107,784,518.10-20,740,031.80

Finding the Fourth Proportional to 71,856,345.40, 107,784,518.10 and 20,740,031.80

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Solution

The fourth proportional to 71,856,345.40, 107,784,518.10 and 20,740,031.80 is: 31,110,047.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,856,345.40 : 107,784,518.10 = 20,740,031.80 : x
  2. Step 2: Convert to fraction form
    71,856,345.40/107,784,518.10 = 20,740,031.80/x
  3. Step 3: Cross multiply
    71,856,345.40x = 107,784,518.10 × 20,740,031.80
  4. Step 4: Simplify right side
    71,856,345.40x = 2,235,454,332,941,675.50
  5. Step 5: Solve for x
    x = 2,235,454,332,941,675.50/71,856,345.40
  6. Step 6: Final answer
    x = 31,110,047.70

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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.