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Finding the Fourth Proportional to 70,374.40, 97,112.80 and 38,537.12

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Solution

The fourth proportional to 70,374.40, 97,112.80 and 38,537.12 is: 53,179.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,374.40 : 97,112.80 = 38,537.12 : x
  2. Step 2: Convert to fraction form
    70,374.40/97,112.80 = 38,537.12/x
  3. Step 3: Cross multiply
    70,374.40x = 97,112.80 × 38,537.12
  4. Step 4: Simplify right side
    70,374.40x = 3,742,447,627.14
  5. Step 5: Solve for x
    x = 3,742,447,627.14/70,374.40
  6. Step 6: Final answer
    x = 53,179.11

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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.