Home / 78,502.23-117,803.30-28,577.48

Finding the Fourth Proportional to 78,502.23, 117,803.30 and 28,577.48

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Solution

The fourth proportional to 78,502.23, 117,803.30 and 28,577.48 is: 42,884.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,502.23 : 117,803.30 = 28,577.48 : x
  2. Step 2: Convert to fraction form
    78,502.23/117,803.30 = 28,577.48/x
  3. Step 3: Cross multiply
    78,502.23x = 117,803.30 × 28,577.48
  4. Step 4: Simplify right side
    78,502.23x = 3,366,520,717.78
  5. Step 5: Solve for x
    x = 3,366,520,717.78/78,502.23
  6. Step 6: Final answer
    x = 42,884.40

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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.