Home / 72,168.90-99,595.20-40,337.88

Finding the Fourth Proportional to 72,168.90, 99,595.20 and 40,337.88

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Solution

The fourth proportional to 72,168.90, 99,595.20 and 40,337.88 is: 55,667.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,168.90 : 99,595.20 = 40,337.88 : x
  2. Step 2: Convert to fraction form
    72,168.90/99,595.20 = 40,337.88/x
  3. Step 3: Cross multiply
    72,168.90x = 99,595.20 × 40,337.88
  4. Step 4: Simplify right side
    72,168.90x = 4,017,459,226.18
  5. Step 5: Solve for x
    x = 4,017,459,226.18/72,168.90
  6. Step 6: Final answer
    x = 55,667.46

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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.