Home / 78,345.48-117,466.08-40,418.40

Finding the Fourth Proportional to 78,345.48, 117,466.08 and 40,418.40

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Solution

The fourth proportional to 78,345.48, 117,466.08 and 40,418.40 is: 60,600.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,345.48 : 117,466.08 = 40,418.40 : x
  2. Step 2: Convert to fraction form
    78,345.48/117,466.08 = 40,418.40/x
  3. Step 3: Cross multiply
    78,345.48x = 117,466.08 × 40,418.40
  4. Step 4: Simplify right side
    78,345.48x = 4,747,791,007.87
  5. Step 5: Solve for x
    x = 4,747,791,007.87/78,345.48
  6. Step 6: Final answer
    x = 60,600.70

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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.