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Finding the Fourth Proportional to 65,790.62, 98,685.06 and 15,870.36

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Solution

The fourth proportional to 65,790.62, 98,685.06 and 15,870.36 is: 23,805.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,790.62 : 98,685.06 = 15,870.36 : x
  2. Step 2: Convert to fraction form
    65,790.62/98,685.06 = 15,870.36/x
  3. Step 3: Cross multiply
    65,790.62x = 98,685.06 × 15,870.36
  4. Step 4: Simplify right side
    65,790.62x = 1,566,167,428.82
  5. Step 5: Solve for x
    x = 1,566,167,428.82/65,790.62
  6. Step 6: Final answer
    x = 23,805.33

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1.5x scale

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.