Home / 52,242.12-78,319.44-21,055.50

Finding the Fourth Proportional to 52,242.12, 78,319.44 and 21,055.50

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Solution

The fourth proportional to 52,242.12, 78,319.44 and 21,055.50 is: 31,565.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,242.12 : 78,319.44 = 21,055.50 : x
  2. Step 2: Convert to fraction form
    52,242.12/78,319.44 = 21,055.50/x
  3. Step 3: Cross multiply
    52,242.12x = 78,319.44 × 21,055.50
  4. Step 4: Simplify right side
    52,242.12x = 1,649,054,968.92
  5. Step 5: Solve for x
    x = 1,649,054,968.92/52,242.12
  6. Step 6: Final answer
    x = 31,565.62

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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.