Home / 64,515,945.60-96,771,844.80-21,387,139.20

Finding the Fourth Proportional to 64,515,945.60, 96,771,844.80 and 21,387,139.20

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Solution

The fourth proportional to 64,515,945.60, 96,771,844.80 and 21,387,139.20 is: 32,080,021.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,515,945.60 : 96,771,844.80 = 21,387,139.20 : x
  2. Step 2: Convert to fraction form
    64,515,945.60/96,771,844.80 = 21,387,139.20/x
  3. Step 3: Cross multiply
    64,515,945.60x = 96,771,844.80 × 21,387,139.20
  4. Step 4: Simplify right side
    64,515,945.60x = 2,069,672,915,378,396
  5. Step 5: Solve for x
    x = 2,069,672,915,378,396/64,515,945.60
  6. Step 6: Final answer
    x = 32,080,021.40

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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.