Home / 90,726.40-136,088.64-28,397.44

Finding the Fourth Proportional to 90,726.40, 136,088.64 and 28,397.44

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Solution

The fourth proportional to 90,726.40, 136,088.64 and 28,397.44 is: 42,595.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,726.40 : 136,088.64 = 28,397.44 : x
  2. Step 2: Convert to fraction form
    90,726.40/136,088.64 = 28,397.44/x
  3. Step 3: Cross multiply
    90,726.40x = 136,088.64 × 28,397.44
  4. Step 4: Simplify right side
    90,726.40x = 3,864,568,989.08
  5. Step 5: Solve for x
    x = 3,864,568,989.08/90,726.40
  6. Step 6: Final answer
    x = 42,595.86

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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.