Home / 84,020,007.20-126,030,010.80-71,030,976.80

Finding the Fourth Proportional to 84,020,007.20, 126,030,010.80 and 71,030,976.80

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Solution

The fourth proportional to 84,020,007.20, 126,030,010.80 and 71,030,976.80 is: 106,546,465.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,020,007.20 : 126,030,010.80 = 71,030,976.80 : x
  2. Step 2: Convert to fraction form
    84,020,007.20/126,030,010.80 = 71,030,976.80/x
  3. Step 3: Cross multiply
    84,020,007.20x = 126,030,010.80 × 71,030,976.80
  4. Step 4: Simplify right side
    84,020,007.20x = 8,952,034,773,238,549
  5. Step 5: Solve for x
    x = 8,952,034,773,238,549/84,020,007.20
  6. Step 6: Final answer
    x = 106,546,465.20

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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.