Home / 72,447.71-99,972.09-40,612.28

Finding the Fourth Proportional to 72,447.71, 99,972.09 and 40,612.28

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Solution

The fourth proportional to 72,447.71, 99,972.09 and 40,612.28 is: 56,041.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,447.71 : 99,972.09 = 40,612.28 : x
  2. Step 2: Convert to fraction form
    72,447.71/99,972.09 = 40,612.28/x
  3. Step 3: Cross multiply
    72,447.71x = 99,972.09 × 40,612.28
  4. Step 4: Simplify right side
    72,447.71x = 4,060,094,011.40
  5. Step 5: Solve for x
    x = 4,060,094,011.40/72,447.71
  6. Step 6: Final answer
    x = 56,041.72

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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.