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Finding the Fourth Proportional to 58,007.36, 87,010.02 and 21,990.74

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Solution

The fourth proportional to 58,007.36, 87,010.02 and 21,990.74 is: 32,985.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,007.36 : 87,010.02 = 21,990.74 : x
  2. Step 2: Convert to fraction form
    58,007.36/87,010.02 = 21,990.74/x
  3. Step 3: Cross multiply
    58,007.36x = 87,010.02 × 21,990.74
  4. Step 4: Simplify right side
    58,007.36x = 1,913,414,727.21
  5. Step 5: Solve for x
    x = 1,913,414,727.21/58,007.36
  6. Step 6: Final answer
    x = 32,985.72

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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.