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Finding the Fourth Proportional to 70,387.61, 97,134.93 and 38,556.63

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Solution

The fourth proportional to 70,387.61, 97,134.93 and 38,556.63 is: 53,208.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,387.61 : 97,134.93 = 38,556.63 : x
  2. Step 2: Convert to fraction form
    70,387.61/97,134.93 = 38,556.63/x
  3. Step 3: Cross multiply
    70,387.61x = 97,134.93 × 38,556.63
  4. Step 4: Simplify right side
    70,387.61x = 3,745,195,556.09
  5. Step 5: Solve for x
    x = 3,745,195,556.09/70,387.61
  6. Step 6: Final answer
    x = 53,208.17

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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.