Home / 78,707.03-108,614.99-42,897.03

Finding the Fourth Proportional to 78,707.03, 108,614.99 and 42,897.03

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Solution

The fourth proportional to 78,707.03, 108,614.99 and 42,897.03 is: 59,197.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,707.03 : 108,614.99 = 42,897.03 : x
  2. Step 2: Convert to fraction form
    78,707.03/108,614.99 = 42,897.03/x
  3. Step 3: Cross multiply
    78,707.03x = 108,614.99 × 42,897.03
  4. Step 4: Simplify right side
    78,707.03x = 4,659,260,269.99
  5. Step 5: Solve for x
    x = 4,659,260,269.99/78,707.03
  6. Step 6: Final answer
    x = 59,197.51

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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.