Home / 77,406.96-106,815-52,290.48

Finding the Fourth Proportional to 77,406.96, 106,815 and 52,290.48

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Solution

The fourth proportional to 77,406.96, 106,815 and 52,290.48 is: 72,156.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,406.96 : 106,815 = 52,290.48 : x
  2. Step 2: Convert to fraction form
    77,406.96/106,815 = 52,290.48/x
  3. Step 3: Cross multiply
    77,406.96x = 106,815 × 52,290.48
  4. Step 4: Simplify right side
    77,406.96x = 5,585,407,621.20
  5. Step 5: Solve for x
    x = 5,585,407,621.20/77,406.96
  6. Step 6: Final answer
    x = 72,156.40

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Double scale
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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.