Home / 71,442,005.20-107,163,007.80-70,938,120.40

Finding the Fourth Proportional to 71,442,005.20, 107,163,007.80 and 70,938,120.40

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Solution

The fourth proportional to 71,442,005.20, 107,163,007.80 and 70,938,120.40 is: 106,407,180.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,442,005.20 : 107,163,007.80 = 70,938,120.40 : x
  2. Step 2: Convert to fraction form
    71,442,005.20/107,163,007.80 = 70,938,120.40/x
  3. Step 3: Cross multiply
    71,442,005.20x = 107,163,007.80 × 70,938,120.40
  4. Step 4: Simplify right side
    71,442,005.20x = 7,601,942,349,742,540
  5. Step 5: Solve for x
    x = 7,601,942,349,742,540/71,442,005.20
  6. Step 6: Final answer
    x = 106,407,180.60

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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.