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Finding the Fourth Proportional to 70,952.13, 97,914.60 and 39,122.16

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Solution

The fourth proportional to 70,952.13, 97,914.60 and 39,122.16 is: 53,988.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,952.13 : 97,914.60 = 39,122.16 : x
  2. Step 2: Convert to fraction form
    70,952.13/97,914.60 = 39,122.16/x
  3. Step 3: Cross multiply
    70,952.13x = 97,914.60 × 39,122.16
  4. Step 4: Simplify right side
    70,952.13x = 3,830,630,647.54
  5. Step 5: Solve for x
    x = 3,830,630,647.54/70,952.13
  6. Step 6: Final answer
    x = 53,988.95

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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.