Home / 80,935,090.80-121,402,636.20-72,432,034.80

Finding the Fourth Proportional to 80,935,090.80, 121,402,636.20 and 72,432,034.80

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Solution

The fourth proportional to 80,935,090.80, 121,402,636.20 and 72,432,034.80 is: 108,648,052.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,935,090.80 : 121,402,636.20 = 72,432,034.80 : x
  2. Step 2: Convert to fraction form
    80,935,090.80/121,402,636.20 = 72,432,034.80/x
  3. Step 3: Cross multiply
    80,935,090.80x = 121,402,636.20 × 72,432,034.80
  4. Step 4: Simplify right side
    80,935,090.80x = 8,793,439,970,050,140
  5. Step 5: Solve for x
    x = 8,793,439,970,050,140/80,935,090.80
  6. Step 6: Final answer
    x = 108,648,052.20

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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.