Home / 78,707.34-108,616.65-42,897.24

Finding the Fourth Proportional to 78,707.34, 108,616.65 and 42,897.24

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Solution

The fourth proportional to 78,707.34, 108,616.65 and 42,897.24 is: 59,198.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,707.34 : 108,616.65 = 42,897.24 : x
  2. Step 2: Convert to fraction form
    78,707.34/108,616.65 = 42,897.24/x
  3. Step 3: Cross multiply
    78,707.34x = 108,616.65 × 42,897.24
  4. Step 4: Simplify right side
    78,707.34x = 4,659,354,503.05
  5. Step 5: Solve for x
    x = 4,659,354,503.05/78,707.34
  6. Step 6: Final answer
    x = 59,198.48

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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.