Home / 52,487.07-78,762.47-21,321.51

Finding the Fourth Proportional to 52,487.07, 78,762.47 and 21,321.51

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Solution

The fourth proportional to 52,487.07, 78,762.47 and 21,321.51 is: 31,995.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,487.07 : 78,762.47 = 21,321.51 : x
  2. Step 2: Convert to fraction form
    52,487.07/78,762.47 = 21,321.51/x
  3. Step 3: Cross multiply
    52,487.07x = 78,762.47 × 21,321.51
  4. Step 4: Simplify right side
    52,487.07x = 1,679,334,685.12
  5. Step 5: Solve for x
    x = 1,679,334,685.12/52,487.07
  6. Step 6: Final answer
    x = 31,995.21

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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.