Home / 92,869.90-128,112.51-58,821.10

Finding the Fourth Proportional to 92,869.90, 128,112.51 and 58,821.10

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Solution

The fourth proportional to 92,869.90, 128,112.51 and 58,821.10 is: 81,142.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,869.90 : 128,112.51 = 58,821.10 : x
  2. Step 2: Convert to fraction form
    92,869.90/128,112.51 = 58,821.10/x
  3. Step 3: Cross multiply
    92,869.90x = 128,112.51 × 58,821.10
  4. Step 4: Simplify right side
    92,869.90x = 7,535,718,761.96
  5. Step 5: Solve for x
    x = 7,535,718,761.96/92,869.90
  6. Step 6: Final answer
    x = 81,142.75

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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.