Home / 91,587.40-137,400.83-28,406.26

Finding the Fourth Proportional to 91,587.40, 137,400.83 and 28,406.26

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Solution

The fourth proportional to 91,587.40, 137,400.83 and 28,406.26 is: 42,615.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,587.40 : 137,400.83 = 28,406.26 : x
  2. Step 2: Convert to fraction form
    91,587.40/137,400.83 = 28,406.26/x
  3. Step 3: Cross multiply
    91,587.40x = 137,400.83 × 28,406.26
  4. Step 4: Simplify right side
    91,587.40x = 3,903,043,701.20
  5. Step 5: Solve for x
    x = 3,903,043,701.20/91,587.40
  6. Step 6: Final answer
    x = 42,615.51

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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.