Home / 85,118.08-117,463.04-47,392.32

Finding the Fourth Proportional to 85,118.08, 117,463.04 and 47,392.32

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Solution

The fourth proportional to 85,118.08, 117,463.04 and 47,392.32 is: 65,401.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,118.08 : 117,463.04 = 47,392.32 : x
  2. Step 2: Convert to fraction form
    85,118.08/117,463.04 = 47,392.32/x
  3. Step 3: Cross multiply
    85,118.08x = 117,463.04 × 47,392.32
  4. Step 4: Simplify right side
    85,118.08x = 5,566,845,979.85
  5. Step 5: Solve for x
    x = 5,566,845,979.85/85,118.08
  6. Step 6: Final answer
    x = 65,401.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.