Home / 90,530.40-135,742.98-60,578.86

Finding the Fourth Proportional to 90,530.40, 135,742.98 and 60,578.86

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Solution

The fourth proportional to 90,530.40, 135,742.98 and 60,578.86 is: 90,833.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,530.40 : 135,742.98 = 60,578.86 : x
  2. Step 2: Convert to fraction form
    90,530.40/135,742.98 = 60,578.86/x
  3. Step 3: Cross multiply
    90,530.40x = 135,742.98 × 60,578.86
  4. Step 4: Simplify right side
    90,530.40x = 8,223,154,981.40
  5. Step 5: Solve for x
    x = 8,223,154,981.40/90,530.40
  6. Step 6: Final answer
    x = 90,833.08

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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.