Home / 90,156.71-135,115.62-47,945.91

Finding the Fourth Proportional to 90,156.71, 135,115.62 and 47,945.91

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Solution

The fourth proportional to 90,156.71, 135,115.62 and 47,945.91 is: 71,855.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,156.71 : 135,115.62 = 47,945.91 : x
  2. Step 2: Convert to fraction form
    90,156.71/135,115.62 = 47,945.91/x
  3. Step 3: Cross multiply
    90,156.71x = 135,115.62 × 47,945.91
  4. Step 4: Simplify right side
    90,156.71x = 6,478,241,356.11
  5. Step 5: Solve for x
    x = 6,478,241,356.11/90,156.71
  6. Step 6: Final answer
    x = 71,855.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.