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Finding the Fourth Proportional to 63,420.41, 87,578.99 and 47,477.18

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Solution

The fourth proportional to 63,420.41, 87,578.99 and 47,477.18 is: 65,562.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,420.41 : 87,578.99 = 47,477.18 : x
  2. Step 2: Convert to fraction form
    63,420.41/87,578.99 = 47,477.18/x
  3. Step 3: Cross multiply
    63,420.41x = 87,578.99 × 47,477.18
  4. Step 4: Simplify right side
    63,420.41x = 4,158,003,810.09
  5. Step 5: Solve for x
    x = 4,158,003,810.09/63,420.41
  6. Step 6: Final answer
    x = 65,562.55

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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.