Home / 91,638.06-137,449.80-28,455.63

Finding the Fourth Proportional to 91,638.06, 137,449.80 and 28,455.63

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Solution

The fourth proportional to 91,638.06, 137,449.80 and 28,455.63 is: 42,681.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,638.06 : 137,449.80 = 28,455.63 : x
  2. Step 2: Convert to fraction form
    91,638.06/137,449.80 = 28,455.63/x
  3. Step 3: Cross multiply
    91,638.06x = 137,449.80 × 28,455.63
  4. Step 4: Simplify right side
    91,638.06x = 3,911,220,652.37
  5. Step 5: Solve for x
    x = 3,911,220,652.37/91,638.06
  6. Step 6: Final answer
    x = 42,681.18

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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.