Home / 71,852,421.40-107,778,632.10-20,736,107.80

Finding the Fourth Proportional to 71,852,421.40, 107,778,632.10 and 20,736,107.80

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Solution

The fourth proportional to 71,852,421.40, 107,778,632.10 and 20,736,107.80 is: 31,104,161.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,852,421.40 : 107,778,632.10 = 20,736,107.80 : x
  2. Step 2: Convert to fraction form
    71,852,421.40/107,778,632.10 = 20,736,107.80/x
  3. Step 3: Cross multiply
    71,852,421.40x = 107,778,632.10 × 20,736,107.80
  4. Step 4: Simplify right side
    71,852,421.40x = 2,234,909,333,762,140.25
  5. Step 5: Solve for x
    x = 2,234,909,333,762,140.25/71,852,421.40
  6. Step 6: Final answer
    x = 31,104,161.70

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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.