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Finding the Fourth Proportional to 64,075.99, 96,116.64 and 21,985.01

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Solution

The fourth proportional to 64,075.99, 96,116.64 and 21,985.01 is: 32,978.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,075.99 : 96,116.64 = 21,985.01 : x
  2. Step 2: Convert to fraction form
    64,075.99/96,116.64 = 21,985.01/x
  3. Step 3: Cross multiply
    64,075.99x = 96,116.64 × 21,985.01
  4. Step 4: Simplify right side
    64,075.99x = 2,113,124,984.73
  5. Step 5: Solve for x
    x = 2,113,124,984.73/64,075.99
  6. Step 6: Final answer
    x = 32,978.42

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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.