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Finding the Fourth Proportional to 71,500.95, 98,669.44 and 39,235.47

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Solution

The fourth proportional to 71,500.95, 98,669.44 and 39,235.47 is: 54,143.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,500.95 : 98,669.44 = 39,235.47 : x
  2. Step 2: Convert to fraction form
    71,500.95/98,669.44 = 39,235.47/x
  3. Step 3: Cross multiply
    71,500.95x = 98,669.44 × 39,235.47
  4. Step 4: Simplify right side
    71,500.95x = 3,871,341,853.04
  5. Step 5: Solve for x
    x = 3,871,341,853.04/71,500.95
  6. Step 6: Final answer
    x = 54,143.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.