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Finding the Fourth Proportional to 70,347.66, 97,078.90 and 38,515.87

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Solution

The fourth proportional to 70,347.66, 97,078.90 and 38,515.87 is: 53,151.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,347.66 : 97,078.90 = 38,515.87 : x
  2. Step 2: Convert to fraction form
    70,347.66/97,078.90 = 38,515.87/x
  3. Step 3: Cross multiply
    70,347.66x = 97,078.90 × 38,515.87
  4. Step 4: Simplify right side
    70,347.66x = 3,739,078,292.14
  5. Step 5: Solve for x
    x = 3,739,078,292.14/70,347.66
  6. Step 6: Final answer
    x = 53,151.42

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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.