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Finding the Fourth Proportional to 70,248.78, 96,945.84 and 40,038.66

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Solution

The fourth proportional to 70,248.78, 96,945.84 and 40,038.66 is: 55,254.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,248.78 : 96,945.84 = 40,038.66 : x
  2. Step 2: Convert to fraction form
    70,248.78/96,945.84 = 40,038.66/x
  3. Step 3: Cross multiply
    70,248.78x = 96,945.84 × 40,038.66
  4. Step 4: Simplify right side
    70,248.78x = 3,881,581,526.17
  5. Step 5: Solve for x
    x = 3,881,581,526.17/70,248.78
  6. Step 6: Final answer
    x = 55,254.79

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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.