Home / 70,939.53-97,897.31-39,109.57

Finding the Fourth Proportional to 70,939.53, 97,897.31 and 39,109.57

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Solution

The fourth proportional to 70,939.53, 97,897.31 and 39,109.57 is: 53,971.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,939.53 : 97,897.31 = 39,109.57 : x
  2. Step 2: Convert to fraction form
    70,939.53/97,897.31 = 39,109.57/x
  3. Step 3: Cross multiply
    70,939.53x = 97,897.31 × 39,109.57
  4. Step 4: Simplify right side
    70,939.53x = 3,828,721,404.63
  5. Step 5: Solve for x
    x = 3,828,721,404.63/70,939.53
  6. Step 6: Final answer
    x = 53,971.62

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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.