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Finding the Fourth Proportional to 92,791.77, 128,019.21 and 52,505.12

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Solution

The fourth proportional to 92,791.77, 128,019.21 and 52,505.12 is: 72,438.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,791.77 : 128,019.21 = 52,505.12 : x
  2. Step 2: Convert to fraction form
    92,791.77/128,019.21 = 52,505.12/x
  3. Step 3: Cross multiply
    92,791.77x = 128,019.21 × 52,505.12
  4. Step 4: Simplify right side
    92,791.77x = 6,721,663,343.26
  5. Step 5: Solve for x
    x = 6,721,663,343.26/92,791.77
  6. Step 6: Final answer
    x = 72,438.14

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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.