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Finding the Fourth Proportional to 72,133.51, 99,572.02 and 64,566.49

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Solution

The fourth proportional to 72,133.51, 99,572.02 and 64,566.49 is: 89,126.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,133.51 : 99,572.02 = 64,566.49 : x
  2. Step 2: Convert to fraction form
    72,133.51/99,572.02 = 64,566.49/x
  3. Step 3: Cross multiply
    72,133.51x = 99,572.02 × 64,566.49
  4. Step 4: Simplify right side
    72,133.51x = 6,429,015,833.61
  5. Step 5: Solve for x
    x = 6,429,015,833.61/72,133.51
  6. Step 6: Final answer
    x = 89,126.62

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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.