Home / 65,865.12-98,767.80-28,407.48

Finding the Fourth Proportional to 65,865.12, 98,767.80 and 28,407.48

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Solution

The fourth proportional to 65,865.12, 98,767.80 and 28,407.48 is: 42,598.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,865.12 : 98,767.80 = 28,407.48 : x
  2. Step 2: Convert to fraction form
    65,865.12/98,767.80 = 28,407.48/x
  3. Step 3: Cross multiply
    65,865.12x = 98,767.80 × 28,407.48
  4. Step 4: Simplify right side
    65,865.12x = 2,805,744,303.14
  5. Step 5: Solve for x
    x = 2,805,744,303.14/65,865.12
  6. Step 6: Final answer
    x = 42,598.33

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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.