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Finding the Fourth Proportional to 72,361.17, 99,803.57 and 63,393.12

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Solution

The fourth proportional to 72,361.17, 99,803.57 and 63,393.12 is: 87,434.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,361.17 : 99,803.57 = 63,393.12 : x
  2. Step 2: Convert to fraction form
    72,361.17/99,803.57 = 63,393.12/x
  3. Step 3: Cross multiply
    72,361.17x = 99,803.57 × 63,393.12
  4. Step 4: Simplify right side
    72,361.17x = 6,326,859,372.47
  5. Step 5: Solve for x
    x = 6,326,859,372.47/72,361.17
  6. Step 6: Final answer
    x = 87,434.45

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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.