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Finding the Fourth Proportional to 70,499.45, 97,292.81 and 38,671.31

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Solution

The fourth proportional to 70,499.45, 97,292.81 and 38,671.31 is: 53,368.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,499.45 : 97,292.81 = 38,671.31 : x
  2. Step 2: Convert to fraction form
    70,499.45/97,292.81 = 38,671.31/x
  3. Step 3: Cross multiply
    70,499.45x = 97,292.81 × 38,671.31
  4. Step 4: Simplify right side
    70,499.45x = 3,762,440,416.28
  5. Step 5: Solve for x
    x = 3,762,440,416.28/70,499.45
  6. Step 6: Final answer
    x = 53,368.37

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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.