Home / 74,278.60-102,502.86-42,008.96

Finding the Fourth Proportional to 74,278.60, 102,502.86 and 42,008.96

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Solution

The fourth proportional to 74,278.60, 102,502.86 and 42,008.96 is: 57,971.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,278.60 : 102,502.86 = 42,008.96 : x
  2. Step 2: Convert to fraction form
    74,278.60/102,502.86 = 42,008.96/x
  3. Step 3: Cross multiply
    74,278.60x = 102,502.86 × 42,008.96
  4. Step 4: Simplify right side
    74,278.60x = 4,306,038,545.63
  5. Step 5: Solve for x
    x = 4,306,038,545.63/74,278.60
  6. Step 6: Final answer
    x = 57,971.46

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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.