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Finding the Fourth Proportional to 70,405.50, 97,159.65 and 38,574.54

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Solution

The fourth proportional to 70,405.50, 97,159.65 and 38,574.54 is: 53,232.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,405.50 : 97,159.65 = 38,574.54 : x
  2. Step 2: Convert to fraction form
    70,405.50/97,159.65 = 38,574.54/x
  3. Step 3: Cross multiply
    70,405.50x = 97,159.65 × 38,574.54
  4. Step 4: Simplify right side
    70,405.50x = 3,747,888,805.31
  5. Step 5: Solve for x
    x = 3,747,888,805.31/70,405.50
  6. Step 6: Final answer
    x = 53,232.90

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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.