Home / 91,515.35-137,218.77-28,316.76

Finding the Fourth Proportional to 91,515.35, 137,218.77 and 28,316.76

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Solution

The fourth proportional to 91,515.35, 137,218.77 and 28,316.76 is: 42,458.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,515.35 : 137,218.77 = 28,316.76 : x
  2. Step 2: Convert to fraction form
    91,515.35/137,218.77 = 28,316.76/x
  3. Step 3: Cross multiply
    91,515.35x = 137,218.77 × 28,316.76
  4. Step 4: Simplify right side
    91,515.35x = 3,885,590,977.59
  5. Step 5: Solve for x
    x = 3,885,590,977.59/91,515.35
  6. Step 6: Final answer
    x = 42,458.35

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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.