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Finding the Fourth Proportional to 90,395.70, 124,744.76 and 52,155.29

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Solution

The fourth proportional to 90,395.70, 124,744.76 and 52,155.29 is: 71,973.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,395.70 : 124,744.76 = 52,155.29 : x
  2. Step 2: Convert to fraction form
    90,395.70/124,744.76 = 52,155.29/x
  3. Step 3: Cross multiply
    90,395.70x = 124,744.76 × 52,155.29
  4. Step 4: Simplify right side
    90,395.70x = 6,506,099,380.45
  5. Step 5: Solve for x
    x = 6,506,099,380.45/90,395.70
  6. Step 6: Final answer
    x = 71,973.55

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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.