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Finding the Fourth Proportional to 92,782.50, 128,040.17 and 50,341.34

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Solution

The fourth proportional to 92,782.50, 128,040.17 and 50,341.34 is: 69,471.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,782.50 : 128,040.17 = 50,341.34 : x
  2. Step 2: Convert to fraction form
    92,782.50/128,040.17 = 50,341.34/x
  3. Step 3: Cross multiply
    92,782.50x = 128,040.17 × 50,341.34
  4. Step 4: Simplify right side
    92,782.50x = 6,445,712,839.72
  5. Step 5: Solve for x
    x = 6,445,712,839.72/92,782.50
  6. Step 6: Final answer
    x = 69,471.21

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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.