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Finding the Fourth Proportional to 70,395.72, 97,143.60 and 38,564.32

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Solution

The fourth proportional to 70,395.72, 97,143.60 and 38,564.32 is: 53,217.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,395.72 : 97,143.60 = 38,564.32 : x
  2. Step 2: Convert to fraction form
    70,395.72/97,143.60 = 38,564.32/x
  3. Step 3: Cross multiply
    70,395.72x = 97,143.60 × 38,564.32
  4. Step 4: Simplify right side
    70,395.72x = 3,746,276,876.35
  5. Step 5: Solve for x
    x = 3,746,276,876.35/70,395.72
  6. Step 6: Final answer
    x = 53,217.40

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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.