Home / 77,431.18-106,741.93-54,730.12

Finding the Fourth Proportional to 77,431.18, 106,741.93 and 54,730.12

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Solution

The fourth proportional to 77,431.18, 106,741.93 and 54,730.12 is: 75,447.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,431.18 : 106,741.93 = 54,730.12 : x
  2. Step 2: Convert to fraction form
    77,431.18/106,741.93 = 54,730.12/x
  3. Step 3: Cross multiply
    77,431.18x = 106,741.93 × 54,730.12
  4. Step 4: Simplify right side
    77,431.18x = 5,841,998,364.28
  5. Step 5: Solve for x
    x = 5,841,998,364.28/77,431.18
  6. Step 6: Final answer
    x = 75,447.62

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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.