Home / 78,432.34-108,235.25-42,622.49

Finding the Fourth Proportional to 78,432.34, 108,235.25 and 42,622.49

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Solution

The fourth proportional to 78,432.34, 108,235.25 and 42,622.49 is: 58,818.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,432.34 : 108,235.25 = 42,622.49 : x
  2. Step 2: Convert to fraction form
    78,432.34/108,235.25 = 42,622.49/x
  3. Step 3: Cross multiply
    78,432.34x = 108,235.25 × 42,622.49
  4. Step 4: Simplify right side
    78,432.34x = 4,613,255,860.77
  5. Step 5: Solve for x
    x = 4,613,255,860.77/78,432.34
  6. Step 6: Final answer
    x = 58,818.29

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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.