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Finding the Fourth Proportional to 72,408.45, 108,653.46 and 56,569.08

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Solution

The fourth proportional to 72,408.45, 108,653.46 and 56,569.08 is: 84,885.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,408.45 : 108,653.46 = 56,569.08 : x
  2. Step 2: Convert to fraction form
    72,408.45/108,653.46 = 56,569.08/x
  3. Step 3: Cross multiply
    72,408.45x = 108,653.46 × 56,569.08
  4. Step 4: Simplify right side
    72,408.45x = 6,146,426,271.02
  5. Step 5: Solve for x
    x = 6,146,426,271.02/72,408.45
  6. Step 6: Final answer
    x = 84,885.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.