Home / 72,165.18-99,585.80-40,334.00

Finding the Fourth Proportional to 72,165.18, 99,585.80 and 40,334.00

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Solution

The fourth proportional to 72,165.18, 99,585.80 and 40,334.00 is: 55,659.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,165.18 : 99,585.80 = 40,334.00 : x
  2. Step 2: Convert to fraction form
    72,165.18/99,585.80 = 40,334.00/x
  3. Step 3: Cross multiply
    72,165.18x = 99,585.80 × 40,334.00
  4. Step 4: Simplify right side
    72,165.18x = 4,016,693,895.90
  5. Step 5: Solve for x
    x = 4,016,693,895.90/72,165.18
  6. Step 6: Final answer
    x = 55,659.72

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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.