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Finding the Fourth Proportional to 72,088.97, 99,482.99 and 40,259.07

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Solution

The fourth proportional to 72,088.97, 99,482.99 and 40,259.07 is: 55,557.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,088.97 : 99,482.99 = 40,259.07 : x
  2. Step 2: Convert to fraction form
    72,088.97/99,482.99 = 40,259.07/x
  3. Step 3: Cross multiply
    72,088.97x = 99,482.99 × 40,259.07
  4. Step 4: Simplify right side
    72,088.97x = 4,005,092,456.92
  5. Step 5: Solve for x
    x = 4,005,092,456.92/72,088.97
  6. Step 6: Final answer
    x = 55,557.64

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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.