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Finding the Fourth Proportional to 60,870.56, 91,301.04 and 19,317.92

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Solution

The fourth proportional to 60,870.56, 91,301.04 and 19,317.92 is: 28,975.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,870.56 : 91,301.04 = 19,317.92 : x
  2. Step 2: Convert to fraction form
    60,870.56/91,301.04 = 19,317.92/x
  3. Step 3: Cross multiply
    60,870.56x = 91,301.04 × 19,317.92
  4. Step 4: Simplify right side
    60,870.56x = 1,763,746,186.64
  5. Step 5: Solve for x
    x = 1,763,746,186.64/60,870.56
  6. Step 6: Final answer
    x = 28,975.36

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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.