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Finding the Fourth Proportional to 70,346.91, 97,078.73 and 38,515.80

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Solution

The fourth proportional to 70,346.91, 97,078.73 and 38,515.80 is: 53,151.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,346.91 : 97,078.73 = 38,515.80 : x
  2. Step 2: Convert to fraction form
    70,346.91/97,078.73 = 38,515.80/x
  3. Step 3: Cross multiply
    70,346.91x = 97,078.73 × 38,515.80
  4. Step 4: Simplify right side
    70,346.91x = 3,739,064,948.93
  5. Step 5: Solve for x
    x = 3,739,064,948.93/70,346.91
  6. Step 6: Final answer
    x = 53,151.80

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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.