Home / 30,331,898.90-45,497,848.35-20,128,231.70

Finding the Fourth Proportional to 30,331,898.90, 45,497,848.35 and 20,128,231.70

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Solution

The fourth proportional to 30,331,898.90, 45,497,848.35 and 20,128,231.70 is: 30,192,347.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,331,898.90 : 45,497,848.35 = 20,128,231.70 : x
  2. Step 2: Convert to fraction form
    30,331,898.90/45,497,848.35 = 20,128,231.70/x
  3. Step 3: Cross multiply
    30,331,898.90x = 45,497,848.35 × 20,128,231.70
  4. Step 4: Simplify right side
    30,331,898.90x = 915,791,233,440,262.75
  5. Step 5: Solve for x
    x = 915,791,233,440,262.75/30,331,898.90
  6. Step 6: Final answer
    x = 30,192,347.55

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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.