Home / 64,964.61-97,458.80-19,985.13

Finding the Fourth Proportional to 64,964.61, 97,458.80 and 19,985.13

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Solution

The fourth proportional to 64,964.61, 97,458.80 and 19,985.13 is: 29,981.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,964.61 : 97,458.80 = 19,985.13 : x
  2. Step 2: Convert to fraction form
    64,964.61/97,458.80 = 19,985.13/x
  3. Step 3: Cross multiply
    64,964.61x = 97,458.80 × 19,985.13
  4. Step 4: Simplify right side
    64,964.61x = 1,947,726,687.72
  5. Step 5: Solve for x
    x = 1,947,726,687.72/64,964.61
  6. Step 6: Final answer
    x = 29,981.35

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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.