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Finding the Fourth Proportional to 74,802, 103,216.53 and 42,970.89

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Solution

The fourth proportional to 74,802, 103,216.53 and 42,970.89 is: 59,293.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,802 : 103,216.53 = 42,970.89 : x
  2. Step 2: Convert to fraction form
    74,802/103,216.53 = 42,970.89/x
  3. Step 3: Cross multiply
    74,802x = 103,216.53 × 42,970.89
  4. Step 4: Simplify right side
    74,802x = 4,435,306,156.81
  5. Step 5: Solve for x
    x = 4,435,306,156.81/74,802
  6. Step 6: Final answer
    x = 59,293.95

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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.