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Finding the Fourth Proportional to 70,777.94, 97,676.16 and 38,948.18

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Solution

The fourth proportional to 70,777.94, 97,676.16 and 38,948.18 is: 53,749.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,777.94 : 97,676.16 = 38,948.18 : x
  2. Step 2: Convert to fraction form
    70,777.94/97,676.16 = 38,948.18/x
  3. Step 3: Cross multiply
    70,777.94x = 97,676.16 × 38,948.18
  4. Step 4: Simplify right side
    70,777.94x = 3,804,308,661.39
  5. Step 5: Solve for x
    x = 3,804,308,661.39/70,777.94
  6. Step 6: Final answer
    x = 53,749.92

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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.