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Finding the Fourth Proportional to 70,578.81, 97,398.91 and 38,749.76

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Solution

The fourth proportional to 70,578.81, 97,398.91 and 38,749.76 is: 53,474.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,578.81 : 97,398.91 = 38,749.76 : x
  2. Step 2: Convert to fraction form
    70,578.81/97,398.91 = 38,749.76/x
  3. Step 3: Cross multiply
    70,578.81x = 97,398.91 × 38,749.76
  4. Step 4: Simplify right side
    70,578.81x = 3,774,184,313.45
  5. Step 5: Solve for x
    x = 3,774,184,313.45/70,578.81
  6. Step 6: Final answer
    x = 53,474.75

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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.