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Finding the Fourth Proportional to 72,125.94, 99,433.71 and 62,160.51

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Solution

The fourth proportional to 72,125.94, 99,433.71 and 62,160.51 is: 85,695.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,125.94 : 99,433.71 = 62,160.51 : x
  2. Step 2: Convert to fraction form
    72,125.94/99,433.71 = 62,160.51/x
  3. Step 3: Cross multiply
    72,125.94x = 99,433.71 × 62,160.51
  4. Step 4: Simplify right side
    72,125.94x = 6,180,850,124.79
  5. Step 5: Solve for x
    x = 6,180,850,124.79/72,125.94
  6. Step 6: Final answer
    x = 85,695.25

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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.