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Finding the Fourth Proportional to 58,458.87, 87,666.69 and 21,008.88

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Solution

The fourth proportional to 58,458.87, 87,666.69 and 21,008.88 is: 31,505.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,458.87 : 87,666.69 = 21,008.88 : x
  2. Step 2: Convert to fraction form
    58,458.87/87,666.69 = 21,008.88/x
  3. Step 3: Cross multiply
    58,458.87x = 87,666.69 × 21,008.88
  4. Step 4: Simplify right side
    58,458.87x = 1,841,778,970.21
  5. Step 5: Solve for x
    x = 1,841,778,970.21/58,458.87
  6. Step 6: Final answer
    x = 31,505.55

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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.