Home / 72,045.66-99,411.12-40,214.55

Finding the Fourth Proportional to 72,045.66, 99,411.12 and 40,214.55

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Solution

The fourth proportional to 72,045.66, 99,411.12 and 40,214.55 is: 55,489.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,045.66 : 99,411.12 = 40,214.55 : x
  2. Step 2: Convert to fraction form
    72,045.66/99,411.12 = 40,214.55/x
  3. Step 3: Cross multiply
    72,045.66x = 99,411.12 × 40,214.55
  4. Step 4: Simplify right side
    72,045.66x = 3,997,773,455.80
  5. Step 5: Solve for x
    x = 3,997,773,455.80/72,045.66
  6. Step 6: Final answer
    x = 55,489.44

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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.