Home / 70,902-97,844.34-38,636.55

Finding the Fourth Proportional to 70,902, 97,844.34 and 38,636.55

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Solution

The fourth proportional to 70,902, 97,844.34 and 38,636.55 is: 53,318.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,902 : 97,844.34 = 38,636.55 : x
  2. Step 2: Convert to fraction form
    70,902/97,844.34 = 38,636.55/x
  3. Step 3: Cross multiply
    70,902x = 97,844.34 × 38,636.55
  4. Step 4: Simplify right side
    70,902x = 3,780,367,734.63
  5. Step 5: Solve for x
    x = 3,780,367,734.63/70,902
  6. Step 6: Final answer
    x = 53,318.21

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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.