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Finding the Fourth Proportional to 70,378.78, 97,122.70 and 38,547.76

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Solution

The fourth proportional to 70,378.78, 97,122.70 and 38,547.76 is: 53,195.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,378.78 : 97,122.70 = 38,547.76 : x
  2. Step 2: Convert to fraction form
    70,378.78/97,122.70 = 38,547.76/x
  3. Step 3: Cross multiply
    70,378.78x = 97,122.70 × 38,547.76
  4. Step 4: Simplify right side
    70,378.78x = 3,743,862,530.15
  5. Step 5: Solve for x
    x = 3,743,862,530.15/70,378.78
  6. Step 6: Final answer
    x = 53,195.90

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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.