Home / 63,638.80-87,782.28-40,970.32

Finding the Fourth Proportional to 63,638.80, 87,782.28 and 40,970.32

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Solution

The fourth proportional to 63,638.80, 87,782.28 and 40,970.32 is: 56,513.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,638.80 : 87,782.28 = 40,970.32 : x
  2. Step 2: Convert to fraction form
    63,638.80/87,782.28 = 40,970.32/x
  3. Step 3: Cross multiply
    63,638.80x = 87,782.28 × 40,970.32
  4. Step 4: Simplify right side
    63,638.80x = 3,596,468,101.93
  5. Step 5: Solve for x
    x = 3,596,468,101.93/63,638.80
  6. Step 6: Final answer
    x = 56,513.76

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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.