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Finding the Fourth Proportional to 64,673,386.80, 97,023,558.60 and 21,555,985.20

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Solution

The fourth proportional to 64,673,386.80, 97,023,558.60 and 21,555,985.20 is: 32,338,470.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,673,386.80 : 97,023,558.60 = 21,555,985.20 : x
  2. Step 2: Convert to fraction form
    64,673,386.80/97,023,558.60 = 21,555,985.20/x
  3. Step 3: Cross multiply
    64,673,386.80x = 97,023,558.60 × 21,555,985.20
  4. Step 4: Simplify right side
    64,673,386.80x = 2,091,438,393,232,932.50
  5. Step 5: Solve for x
    x = 2,091,438,393,232,932.50/64,673,386.80
  6. Step 6: Final answer
    x = 32,338,470.22

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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.