Home / 91,588.90-137,403.08-28,407.76

Finding the Fourth Proportional to 91,588.90, 137,403.08 and 28,407.76

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Solution

The fourth proportional to 91,588.90, 137,403.08 and 28,407.76 is: 42,617.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,588.90 : 137,403.08 = 28,407.76 : x
  2. Step 2: Convert to fraction form
    91,588.90/137,403.08 = 28,407.76/x
  3. Step 3: Cross multiply
    91,588.90x = 137,403.08 × 28,407.76
  4. Step 4: Simplify right side
    91,588.90x = 3,903,313,719.90
  5. Step 5: Solve for x
    x = 3,903,313,719.90/91,588.90
  6. Step 6: Final answer
    x = 42,617.76

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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.