Home / 72,612,014.20-108,918,021.30-38,515,809.40

Finding the Fourth Proportional to 72,612,014.20, 108,918,021.30 and 38,515,809.40

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Solution

The fourth proportional to 72,612,014.20, 108,918,021.30 and 38,515,809.40 is: 57,773,714.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,612,014.20 : 108,918,021.30 = 38,515,809.40 : x
  2. Step 2: Convert to fraction form
    72,612,014.20/108,918,021.30 = 38,515,809.40/x
  3. Step 3: Cross multiply
    72,612,014.20x = 108,918,021.30 × 38,515,809.40
  4. Step 4: Simplify right side
    72,612,014.20x = 4,195,065,748,615,940
  5. Step 5: Solve for x
    x = 4,195,065,748,615,940/72,612,014.20
  6. Step 6: Final answer
    x = 57,773,714.10

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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.