Home / 72,871.04-100,587.21-42,666.07

Finding the Fourth Proportional to 72,871.04, 100,587.21 and 42,666.07

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Solution

The fourth proportional to 72,871.04, 100,587.21 and 42,666.07 is: 58,893.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,871.04 : 100,587.21 = 42,666.07 : x
  2. Step 2: Convert to fraction form
    72,871.04/100,587.21 = 42,666.07/x
  3. Step 3: Cross multiply
    72,871.04x = 100,587.21 × 42,666.07
  4. Step 4: Simplify right side
    72,871.04x = 4,291,660,942.96
  5. Step 5: Solve for x
    x = 4,291,660,942.96/72,871.04
  6. Step 6: Final answer
    x = 58,893.92

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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.