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Finding the Fourth Proportional to 74,308, 102,545.04 and 40,776.16

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Solution

The fourth proportional to 74,308, 102,545.04 and 40,776.16 is: 56,271.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,308 : 102,545.04 = 40,776.16 : x
  2. Step 2: Convert to fraction form
    74,308/102,545.04 = 40,776.16/x
  3. Step 3: Cross multiply
    74,308x = 102,545.04 × 40,776.16
  4. Step 4: Simplify right side
    74,308x = 4,181,392,958.25
  5. Step 5: Solve for x
    x = 4,181,392,958.25/74,308
  6. Step 6: Final answer
    x = 56,271.10

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.