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Finding the Fourth Proportional to 58,426.70, 87,678.87 and 21,490.70

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Solution

The fourth proportional to 58,426.70, 87,678.87 and 21,490.70 is: 32,250.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,426.70 : 87,678.87 = 21,490.70 : x
  2. Step 2: Convert to fraction form
    58,426.70/87,678.87 = 21,490.70/x
  3. Step 3: Cross multiply
    58,426.70x = 87,678.87 × 21,490.70
  4. Step 4: Simplify right side
    58,426.70x = 1,884,280,291.51
  5. Step 5: Solve for x
    x = 1,884,280,291.51/58,426.70
  6. Step 6: Final answer
    x = 32,250.33

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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.