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Finding the Fourth Proportional to 58,066.17, 87,138.09 and 21,130.17

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Solution

The fourth proportional to 58,066.17, 87,138.09 and 21,130.17 is: 31,709.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,066.17 : 87,138.09 = 21,130.17 : x
  2. Step 2: Convert to fraction form
    58,066.17/87,138.09 = 21,130.17/x
  3. Step 3: Cross multiply
    58,066.17x = 87,138.09 × 21,130.17
  4. Step 4: Simplify right side
    58,066.17x = 1,841,242,655.18
  5. Step 5: Solve for x
    x = 1,841,242,655.18/58,066.17
  6. Step 6: Final answer
    x = 31,709.39

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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.