Home / 72,252.90-99,708.93-40,421.79

Finding the Fourth Proportional to 72,252.90, 99,708.93 and 40,421.79

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Solution

The fourth proportional to 72,252.90, 99,708.93 and 40,421.79 is: 55,782.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,252.90 : 99,708.93 = 40,421.79 : x
  2. Step 2: Convert to fraction form
    72,252.90/99,708.93 = 40,421.79/x
  3. Step 3: Cross multiply
    72,252.90x = 99,708.93 × 40,421.79
  4. Step 4: Simplify right side
    72,252.90x = 4,030,413,429.58
  5. Step 5: Solve for x
    x = 4,030,413,429.58/72,252.90
  6. Step 6: Final answer
    x = 55,782.03

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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.