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Finding the Fourth Proportional to 63,483.39, 87,582.15 and 40,818.78

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Solution

The fourth proportional to 63,483.39, 87,582.15 and 40,818.78 is: 56,313.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,483.39 : 87,582.15 = 40,818.78 : x
  2. Step 2: Convert to fraction form
    63,483.39/87,582.15 = 40,818.78/x
  3. Step 3: Cross multiply
    63,483.39x = 87,582.15 × 40,818.78
  4. Step 4: Simplify right side
    63,483.39x = 3,574,996,512.78
  5. Step 5: Solve for x
    x = 3,574,996,512.78/63,483.39
  6. Step 6: Final answer
    x = 56,313.89

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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.