Home / 90,130.46-135,154.67-47,999.72

Finding the Fourth Proportional to 90,130.46, 135,154.67 and 47,999.72

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Solution

The fourth proportional to 90,130.46, 135,154.67 and 47,999.72 is: 71,977.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,130.46 : 135,154.67 = 47,999.72 : x
  2. Step 2: Convert to fraction form
    90,130.46/135,154.67 = 47,999.72/x
  3. Step 3: Cross multiply
    90,130.46x = 135,154.67 × 47,999.72
  4. Step 4: Simplify right side
    90,130.46x = 6,487,386,414.58
  5. Step 5: Solve for x
    x = 6,487,386,414.58/90,130.46
  6. Step 6: Final answer
    x = 71,977.74

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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.