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Finding the Fourth Proportional to 58,002.45, 86,992.70 and 20,561.01

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Solution

The fourth proportional to 58,002.45, 86,992.70 and 20,561.01 is: 30,837.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,002.45 : 86,992.70 = 20,561.01 : x
  2. Step 2: Convert to fraction form
    58,002.45/86,992.70 = 20,561.01/x
  3. Step 3: Cross multiply
    58,002.45x = 86,992.70 × 20,561.01
  4. Step 4: Simplify right side
    58,002.45x = 1,788,657,671.82
  5. Step 5: Solve for x
    x = 1,788,657,671.82/58,002.45
  6. Step 6: Final answer
    x = 30,837.62

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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.