Home / 74,650.28-103,030.80-42,829.70

Finding the Fourth Proportional to 74,650.28, 103,030.80 and 42,829.70

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Solution

The fourth proportional to 74,650.28, 103,030.80 and 42,829.70 is: 59,112.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,650.28 : 103,030.80 = 42,829.70 : x
  2. Step 2: Convert to fraction form
    74,650.28/103,030.80 = 42,829.70/x
  3. Step 3: Cross multiply
    74,650.28x = 103,030.80 × 42,829.70
  4. Step 4: Simplify right side
    74,650.28x = 4,412,778,254.76
  5. Step 5: Solve for x
    x = 4,412,778,254.76/74,650.28
  6. Step 6: Final answer
    x = 59,112.68

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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.