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Finding the Fourth Proportional to 70,579.72, 97,398.79 and 38,748.39

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Solution

The fourth proportional to 70,579.72, 97,398.79 and 38,748.39 is: 53,472.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,579.72 : 97,398.79 = 38,748.39 : x
  2. Step 2: Convert to fraction form
    70,579.72/97,398.79 = 38,748.39/x
  3. Step 3: Cross multiply
    70,579.72x = 97,398.79 × 38,748.39
  4. Step 4: Simplify right side
    70,579.72x = 3,774,046,056.29
  5. Step 5: Solve for x
    x = 3,774,046,056.29/70,579.72
  6. Step 6: Final answer
    x = 53,472.11

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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.